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Finding the Fourth Proportional to 398,039.44, 549,294.44 and 216,751.30

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Solution

The fourth proportional to 398,039.44, 549,294.44 and 216,751.30 is: 299,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,039.44 : 549,294.44 = 216,751.30 : x
  2. Step 2: Convert to fraction form
    398,039.44/549,294.44 = 216,751.30/x
  3. Step 3: Cross multiply
    398,039.44x = 549,294.44 × 216,751.30
  4. Step 4: Simplify right side
    398,039.44x = 119,060,283,952.77
  5. Step 5: Solve for x
    x = 119,060,283,952.77/398,039.44
  6. Step 6: Final answer
    x = 299,116.80

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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.