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Finding the Fourth Proportional to 614,356.89, 921,950.28 and 215,001.15

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Solution

The fourth proportional to 614,356.89, 921,950.28 and 215,001.15 is: 322,646.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,356.89 : 921,950.28 = 215,001.15 : x
  2. Step 2: Convert to fraction form
    614,356.89/921,950.28 = 215,001.15/x
  3. Step 3: Cross multiply
    614,356.89x = 921,950.28 × 215,001.15
  4. Step 4: Simplify right side
    614,356.89x = 198,220,370,442.82
  5. Step 5: Solve for x
    x = 198,220,370,442.82/614,356.89
  6. Step 6: Final answer
    x = 322,646.94

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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.