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Finding the Fourth Proportional to 322,363.60, 483,545.40 and 85,730.20

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Solution

The fourth proportional to 322,363.60, 483,545.40 and 85,730.20 is: 128,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,363.60 : 483,545.40 = 85,730.20 : x
  2. Step 2: Convert to fraction form
    322,363.60/483,545.40 = 85,730.20/x
  3. Step 3: Cross multiply
    322,363.60x = 483,545.40 × 85,730.20
  4. Step 4: Simplify right side
    322,363.60x = 41,454,443,851.08
  5. Step 5: Solve for x
    x = 41,454,443,851.08/322,363.60
  6. Step 6: Final answer
    x = 128,595.30

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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.