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Finding the Fourth Proportional to 398,175.48, 549,445.68 and 237,069.72

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Solution

The fourth proportional to 398,175.48, 549,445.68 and 237,069.72 is: 327,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,175.48 : 549,445.68 = 237,069.72 : x
  2. Step 2: Convert to fraction form
    398,175.48/549,445.68 = 237,069.72/x
  3. Step 3: Cross multiply
    398,175.48x = 549,445.68 × 237,069.72
  4. Step 4: Simplify right side
    398,175.48x = 130,256,933,512.81
  5. Step 5: Solve for x
    x = 130,256,933,512.81/398,175.48
  6. Step 6: Final answer
    x = 327,134.49

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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.