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Finding the Fourth Proportional to 398,357.76, 549,538.92 and 237,161.28

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Solution

The fourth proportional to 398,357.76, 549,538.92 and 237,161.28 is: 327,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,357.76 : 549,538.92 = 237,161.28 : x
  2. Step 2: Convert to fraction form
    398,357.76/549,538.92 = 237,161.28/x
  3. Step 3: Cross multiply
    398,357.76x = 549,538.92 × 237,161.28
  4. Step 4: Simplify right side
    398,357.76x = 130,329,353,677.02
  5. Step 5: Solve for x
    x = 130,329,353,677.02/398,357.76
  6. Step 6: Final answer
    x = 327,166.60

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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.