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Finding the Fourth Proportional to 288,844.30, 433,266.45 and 89,146.90

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Solution

The fourth proportional to 288,844.30, 433,266.45 and 89,146.90 is: 133,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,844.30 : 433,266.45 = 89,146.90 : x
  2. Step 2: Convert to fraction form
    288,844.30/433,266.45 = 89,146.90/x
  3. Step 3: Cross multiply
    288,844.30x = 433,266.45 × 89,146.90
  4. Step 4: Simplify right side
    288,844.30x = 38,624,360,891.51
  5. Step 5: Solve for x
    x = 38,624,360,891.51/288,844.30
  6. Step 6: Final answer
    x = 133,720.35

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Similar ratio
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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.