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Finding the Fourth Proportional to 286,545.20, 429,817.80 and 76,204.40

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Solution

The fourth proportional to 286,545.20, 429,817.80 and 76,204.40 is: 114,306.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,545.20 : 429,817.80 = 76,204.40 : x
  2. Step 2: Convert to fraction form
    286,545.20/429,817.80 = 76,204.40/x
  3. Step 3: Cross multiply
    286,545.20x = 429,817.80 × 76,204.40
  4. Step 4: Simplify right side
    286,545.20x = 32,754,007,558.32
  5. Step 5: Solve for x
    x = 32,754,007,558.32/286,545.20
  6. Step 6: Final answer
    x = 114,306.60

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1.5x scale

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.