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Finding the Fourth Proportional to 642,887, 964,330.50 and 248,903

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Solution

The fourth proportional to 642,887, 964,330.50 and 248,903 is: 373,354.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,887 : 964,330.50 = 248,903 : x
  2. Step 2: Convert to fraction form
    642,887/964,330.50 = 248,903/x
  3. Step 3: Cross multiply
    642,887x = 964,330.50 × 248,903
  4. Step 4: Simplify right side
    642,887x = 240,024,754,441.50
  5. Step 5: Solve for x
    x = 240,024,754,441.50/642,887
  6. Step 6: Final answer
    x = 373,354.50

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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.