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Finding the Fourth Proportional to 286,363.70, 429,545.55 and 76,022.90

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Solution

The fourth proportional to 286,363.70, 429,545.55 and 76,022.90 is: 114,034.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,363.70 : 429,545.55 = 76,022.90 : x
  2. Step 2: Convert to fraction form
    286,363.70/429,545.55 = 76,022.90/x
  3. Step 3: Cross multiply
    286,363.70x = 429,545.55 × 76,022.90
  4. Step 4: Simplify right side
    286,363.70x = 32,655,298,393.10
  5. Step 5: Solve for x
    x = 32,655,298,393.10/286,363.70
  6. Step 6: Final answer
    x = 114,034.35

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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.