Home / 288,834.40-432,890.10-139,034.56

Finding the Fourth Proportional to 288,834.40, 432,890.10 and 139,034.56

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Solution

The fourth proportional to 288,834.40, 432,890.10 and 139,034.56 is: 208,377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,834.40 : 432,890.10 = 139,034.56 : x
  2. Step 2: Convert to fraction form
    288,834.40/432,890.10 = 139,034.56/x
  3. Step 3: Cross multiply
    288,834.40x = 432,890.10 × 139,034.56
  4. Step 4: Simplify right side
    288,834.40x = 60,186,684,581.86
  5. Step 5: Solve for x
    x = 60,186,684,581.86/288,834.40
  6. Step 6: Final answer
    x = 208,377.83

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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.