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Finding the Fourth Proportional to 398,030.29, 549,291.65 and 216,752.15

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Solution

The fourth proportional to 398,030.29, 549,291.65 and 216,752.15 is: 299,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,030.29 : 549,291.65 = 216,752.15 : x
  2. Step 2: Convert to fraction form
    398,030.29/549,291.65 = 216,752.15/x
  3. Step 3: Cross multiply
    398,030.29x = 549,291.65 × 216,752.15
  4. Step 4: Simplify right side
    398,030.29x = 119,060,146,404.02
  5. Step 5: Solve for x
    x = 119,060,146,404.02/398,030.29
  6. Step 6: Final answer
    x = 299,123.33

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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.