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Finding the Fourth Proportional to 288,000.38, 431,984.36 and 88,320.23

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Solution

The fourth proportional to 288,000.38, 431,984.36 and 88,320.23 is: 132,475.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,000.38 : 431,984.36 = 88,320.23 : x
  2. Step 2: Convert to fraction form
    288,000.38/431,984.36 = 88,320.23/x
  3. Step 3: Cross multiply
    288,000.38x = 431,984.36 × 88,320.23
  4. Step 4: Simplify right side
    288,000.38x = 38,152,955,430.08
  5. Step 5: Solve for x
    x = 38,152,955,430.08/288,000.38
  6. Step 6: Final answer
    x = 132,475.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.