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Finding the Fourth Proportional to 311,439.98, 429,787.14 and 168,200.03

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Solution

The fourth proportional to 311,439.98, 429,787.14 and 168,200.03 is: 232,116.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,439.98 : 429,787.14 = 168,200.03 : x
  2. Step 2: Convert to fraction form
    311,439.98/429,787.14 = 168,200.03/x
  3. Step 3: Cross multiply
    311,439.98x = 429,787.14 × 168,200.03
  4. Step 4: Simplify right side
    311,439.98x = 72,290,209,841.61
  5. Step 5: Solve for x
    x = 72,290,209,841.61/311,439.98
  6. Step 6: Final answer
    x = 232,116.02

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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.