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Finding the Fourth Proportional to 487,562.63, 731,478.50 and 203,386.74

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Solution

The fourth proportional to 487,562.63, 731,478.50 and 203,386.74 is: 305,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,562.63 : 731,478.50 = 203,386.74 : x
  2. Step 2: Convert to fraction form
    487,562.63/731,478.50 = 203,386.74/x
  3. Step 3: Cross multiply
    487,562.63x = 731,478.50 × 203,386.74
  4. Step 4: Simplify right side
    487,562.63x = 148,773,026,478.16
  5. Step 5: Solve for x
    x = 148,773,026,478.16/487,562.63
  6. Step 6: Final answer
    x = 305,136.24

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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.