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Finding the Fourth Proportional to 487,987.54, 730,915.25 and 202,813.47

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Solution

The fourth proportional to 487,987.54, 730,915.25 and 202,813.47 is: 303,777.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,987.54 : 730,915.25 = 202,813.47 : x
  2. Step 2: Convert to fraction form
    487,987.54/730,915.25 = 202,813.47/x
  3. Step 3: Cross multiply
    487,987.54x = 730,915.25 × 202,813.47
  4. Step 4: Simplify right side
    487,987.54x = 148,239,457,114.35
  5. Step 5: Solve for x
    x = 148,239,457,114.35/487,987.54
  6. Step 6: Final answer
    x = 303,777.14

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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.