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Finding the Fourth Proportional to 398,226.32, 549,545.96 and 216,940.42

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Solution

The fourth proportional to 398,226.32, 549,545.96 and 216,940.42 is: 299,374.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,226.32 : 549,545.96 = 216,940.42 : x
  2. Step 2: Convert to fraction form
    398,226.32/549,545.96 = 216,940.42/x
  3. Step 3: Cross multiply
    398,226.32x = 549,545.96 × 216,940.42
  4. Step 4: Simplify right side
    398,226.32x = 119,218,730,540.19
  5. Step 5: Solve for x
    x = 119,218,730,540.19/398,226.32
  6. Step 6: Final answer
    x = 299,374.32

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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.