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Finding the Fourth Proportional to 288,829.80, 433,244.70 and 89,132.40

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Solution

The fourth proportional to 288,829.80, 433,244.70 and 89,132.40 is: 133,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,829.80 : 433,244.70 = 89,132.40 : x
  2. Step 2: Convert to fraction form
    288,829.80/433,244.70 = 89,132.40/x
  3. Step 3: Cross multiply
    288,829.80x = 433,244.70 × 89,132.40
  4. Step 4: Simplify right side
    288,829.80x = 38,616,139,898.28
  5. Step 5: Solve for x
    x = 38,616,139,898.28/288,829.80
  6. Step 6: Final answer
    x = 133,698.60

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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.