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Finding the Fourth Proportional to 288,679.80, 433,019.70 and 88,982.40

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Solution

The fourth proportional to 288,679.80, 433,019.70 and 88,982.40 is: 133,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,679.80 : 433,019.70 = 88,982.40 : x
  2. Step 2: Convert to fraction form
    288,679.80/433,019.70 = 88,982.40/x
  3. Step 3: Cross multiply
    288,679.80x = 433,019.70 × 88,982.40
  4. Step 4: Simplify right side
    288,679.80x = 38,531,132,153.28
  5. Step 5: Solve for x
    x = 38,531,132,153.28/288,679.80
  6. Step 6: Final answer
    x = 133,473.60

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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.