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Finding the Fourth Proportional to 487,276.02, 731,283.31 and 206,989.94

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Solution

The fourth proportional to 487,276.02, 731,283.31 and 206,989.94 is: 310,641.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,276.02 : 731,283.31 = 206,989.94 : x
  2. Step 2: Convert to fraction form
    487,276.02/731,283.31 = 206,989.94/x
  3. Step 3: Cross multiply
    487,276.02x = 731,283.31 × 206,989.94
  4. Step 4: Simplify right side
    487,276.02x = 151,368,288,459.90
  5. Step 5: Solve for x
    x = 151,368,288,459.90/487,276.02
  6. Step 6: Final answer
    x = 310,641.78

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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.