Home / 289,078.38-433,458.27-89,343.72

Finding the Fourth Proportional to 289,078.38, 433,458.27 and 89,343.72

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Solution

The fourth proportional to 289,078.38, 433,458.27 and 89,343.72 is: 133,966.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,078.38 : 433,458.27 = 89,343.72 : x
  2. Step 2: Convert to fraction form
    289,078.38/433,458.27 = 89,343.72/x
  3. Step 3: Cross multiply
    289,078.38x = 433,458.27 × 89,343.72
  4. Step 4: Simplify right side
    289,078.38x = 38,726,774,306.56
  5. Step 5: Solve for x
    x = 38,726,774,306.56/289,078.38
  6. Step 6: Final answer
    x = 133,966.35

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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.