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Finding the Fourth Proportional to 487,280.82, 730,430.58 and 203,128.71

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Solution

The fourth proportional to 487,280.82, 730,430.58 and 203,128.71 is: 304,488.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,280.82 : 730,430.58 = 203,128.71 : x
  2. Step 2: Convert to fraction form
    487,280.82/730,430.58 = 203,128.71/x
  3. Step 3: Cross multiply
    487,280.82x = 730,430.58 × 203,128.71
  4. Step 4: Simplify right side
    487,280.82x = 148,371,421,459.95
  5. Step 5: Solve for x
    x = 148,371,421,459.95/487,280.82
  6. Step 6: Final answer
    x = 304,488.53

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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.