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Finding the Fourth Proportional to 400,045.40, 600,068.10 and 242,581.40

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Solution

The fourth proportional to 400,045.40, 600,068.10 and 242,581.40 is: 363,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,045.40 : 600,068.10 = 242,581.40 : x
  2. Step 2: Convert to fraction form
    400,045.40/600,068.10 = 242,581.40/x
  3. Step 3: Cross multiply
    400,045.40x = 600,068.10 × 242,581.40
  4. Step 4: Simplify right side
    400,045.40x = 145,565,359,793.34
  5. Step 5: Solve for x
    x = 145,565,359,793.34/400,045.40
  6. Step 6: Final answer
    x = 363,872.10

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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.