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Finding the Fourth Proportional to 390,753.95, 586,113.31 and 162,955.76

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Solution

The fourth proportional to 390,753.95, 586,113.31 and 162,955.76 is: 244,426.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,753.95 : 586,113.31 = 162,955.76 : x
  2. Step 2: Convert to fraction form
    390,753.95/586,113.31 = 162,955.76/x
  3. Step 3: Cross multiply
    390,753.95x = 586,113.31 × 162,955.76
  4. Step 4: Simplify right side
    390,753.95x = 95,510,539,877.17
  5. Step 5: Solve for x
    x = 95,510,539,877.17/390,753.95
  6. Step 6: Final answer
    x = 244,426.29

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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.