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Finding the Fourth Proportional to 642,886.50, 964,329.75 and 248,902.50

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Solution

The fourth proportional to 642,886.50, 964,329.75 and 248,902.50 is: 373,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,886.50 : 964,329.75 = 248,902.50 : x
  2. Step 2: Convert to fraction form
    642,886.50/964,329.75 = 248,902.50/x
  3. Step 3: Cross multiply
    642,886.50x = 964,329.75 × 248,902.50
  4. Step 4: Simplify right side
    642,886.50x = 240,024,085,599.38
  5. Step 5: Solve for x
    x = 240,024,085,599.38/642,886.50
  6. Step 6: Final answer
    x = 373,353.75

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Double scale
Find fourth proportional to 642,887.50, 964,331.25 and 248,903.50
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.