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Finding the Fourth Proportional to 279,581.04, 385,808.13 and 158,706.16

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Solution

The fourth proportional to 279,581.04, 385,808.13 and 158,706.16 is: 219,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,581.04 : 385,808.13 = 158,706.16 : x
  2. Step 2: Convert to fraction form
    279,581.04/385,808.13 = 158,706.16/x
  3. Step 3: Cross multiply
    279,581.04x = 385,808.13 × 158,706.16
  4. Step 4: Simplify right side
    279,581.04x = 61,230,125,844.56
  5. Step 5: Solve for x
    x = 61,230,125,844.56/279,581.04
  6. Step 6: Final answer
    x = 219,006.72

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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.