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Finding the Fourth Proportional to 258,419.65, 356,626.83 and 156,463.76

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Solution

The fourth proportional to 258,419.65, 356,626.83 and 156,463.76 is: 215,924.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,419.65 : 356,626.83 = 156,463.76 : x
  2. Step 2: Convert to fraction form
    258,419.65/356,626.83 = 156,463.76/x
  3. Step 3: Cross multiply
    258,419.65x = 356,626.83 × 156,463.76
  4. Step 4: Simplify right side
    258,419.65x = 55,799,175,336.88
  5. Step 5: Solve for x
    x = 55,799,175,336.88/258,419.65
  6. Step 6: Final answer
    x = 215,924.66

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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.