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Finding the Fourth Proportional to 398,496, 549,920.92 and 217,207.92

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Solution

The fourth proportional to 398,496, 549,920.92 and 217,207.92 is: 299,744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,496 : 549,920.92 = 217,207.92 : x
  2. Step 2: Convert to fraction form
    398,496/549,920.92 = 217,207.92/x
  3. Step 3: Cross multiply
    398,496x = 549,920.92 × 217,207.92
  4. Step 4: Simplify right side
    398,496x = 119,447,179,197.69
  5. Step 5: Solve for x
    x = 119,447,179,197.69/398,496
  6. Step 6: Final answer
    x = 299,744.99

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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.