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Finding the Fourth Proportional to 158,780.65, 218,815.26 and 155,862.66

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Solution

The fourth proportional to 158,780.65, 218,815.26 and 155,862.66 is: 214,793.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,780.65 : 218,815.26 = 155,862.66 : x
  2. Step 2: Convert to fraction form
    158,780.65/218,815.26 = 155,862.66/x
  3. Step 3: Cross multiply
    158,780.65x = 218,815.26 × 155,862.66
  4. Step 4: Simplify right side
    158,780.65x = 34,105,127,145.84
  5. Step 5: Solve for x
    x = 34,105,127,145.84/158,780.65
  6. Step 6: Final answer
    x = 214,793.97

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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.