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Finding the Fourth Proportional to 147,696.40, 221,501.40 and 52,915.60

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Solution

The fourth proportional to 147,696.40, 221,501.40 and 52,915.60 is: 79,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,696.40 : 221,501.40 = 52,915.60 : x
  2. Step 2: Convert to fraction form
    147,696.40/221,501.40 = 52,915.60/x
  3. Step 3: Cross multiply
    147,696.40x = 221,501.40 × 52,915.60
  4. Step 4: Simplify right side
    147,696.40x = 11,720,879,481.84
  5. Step 5: Solve for x
    x = 11,720,879,481.84/147,696.40
  6. Step 6: Final answer
    x = 79,357.92

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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.