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Finding the Fourth Proportional to 288,701.80, 433,052.70 and 89,004.40

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Solution

The fourth proportional to 288,701.80, 433,052.70 and 89,004.40 is: 133,506.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,701.80 : 433,052.70 = 89,004.40 : x
  2. Step 2: Convert to fraction form
    288,701.80/433,052.70 = 89,004.40/x
  3. Step 3: Cross multiply
    288,701.80x = 433,052.70 × 89,004.40
  4. Step 4: Simplify right side
    288,701.80x = 38,543,595,731.88
  5. Step 5: Solve for x
    x = 38,543,595,731.88/288,701.80
  6. Step 6: Final answer
    x = 133,506.60

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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.