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Finding the Fourth Proportional to 239,306.86, 330,013.20 and 157,488.76

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Solution

The fourth proportional to 239,306.86, 330,013.20 and 157,488.76 is: 217,182.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,306.86 : 330,013.20 = 157,488.76 : x
  2. Step 2: Convert to fraction form
    239,306.86/330,013.20 = 157,488.76/x
  3. Step 3: Cross multiply
    239,306.86x = 330,013.20 × 157,488.76
  4. Step 4: Simplify right side
    239,306.86x = 51,973,369,651.63
  5. Step 5: Solve for x
    x = 51,973,369,651.63/239,306.86
  6. Step 6: Final answer
    x = 217,182.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.