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Finding the Fourth Proportional to 311,577.72, 429,976.58 and 168,337.32

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Solution

The fourth proportional to 311,577.72, 429,976.58 and 168,337.32 is: 232,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,577.72 : 429,976.58 = 168,337.32 : x
  2. Step 2: Convert to fraction form
    311,577.72/429,976.58 = 168,337.32/x
  3. Step 3: Cross multiply
    311,577.72x = 429,976.58 × 168,337.32
  4. Step 4: Simplify right side
    311,577.72x = 72,381,105,139.97
  5. Step 5: Solve for x
    x = 72,381,105,139.97/311,577.72
  6. Step 6: Final answer
    x = 232,305.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.