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Finding the Fourth Proportional to 615,176.80, 922,765.20 and 349,456.30

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Solution

The fourth proportional to 615,176.80, 922,765.20 and 349,456.30 is: 524,184.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,176.80 : 922,765.20 = 349,456.30 : x
  2. Step 2: Convert to fraction form
    615,176.80/922,765.20 = 349,456.30/x
  3. Step 3: Cross multiply
    615,176.80x = 922,765.20 × 349,456.30
  4. Step 4: Simplify right side
    615,176.80x = 322,466,112,560.76
  5. Step 5: Solve for x
    x = 322,466,112,560.76/615,176.80
  6. Step 6: Final answer
    x = 524,184.45

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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.