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Finding the Fourth Proportional to 398,432.34, 549,772.20 and 237,283.20

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Solution

The fourth proportional to 398,432.34, 549,772.20 and 237,283.20 is: 327,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,432.34 : 549,772.20 = 237,283.20 : x
  2. Step 2: Convert to fraction form
    398,432.34/549,772.20 = 237,283.20/x
  3. Step 3: Cross multiply
    398,432.34x = 549,772.20 × 237,283.20
  4. Step 4: Simplify right side
    398,432.34x = 130,451,706,887.04
  5. Step 5: Solve for x
    x = 130,451,706,887.04/398,432.34
  6. Step 6: Final answer
    x = 327,412.45

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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.