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Finding the Fourth Proportional to 487,281.98, 730,432.13 and 203,129.72

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Solution

The fourth proportional to 487,281.98, 730,432.13 and 203,129.72 is: 304,489.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,281.98 : 730,432.13 = 203,129.72 : x
  2. Step 2: Convert to fraction form
    487,281.98/730,432.13 = 203,129.72/x
  3. Step 3: Cross multiply
    487,281.98x = 730,432.13 × 203,129.72
  4. Step 4: Simplify right side
    487,281.98x = 148,372,477,368.50
  5. Step 5: Solve for x
    x = 148,372,477,368.50/487,281.98
  6. Step 6: Final answer
    x = 304,489.98

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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.