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Finding the Fourth Proportional to 279,337.83, 385,494.95 and 158,484.21

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Solution

The fourth proportional to 279,337.83, 385,494.95 and 158,484.21 is: 218,713.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,337.83 : 385,494.95 = 158,484.21 : x
  2. Step 2: Convert to fraction form
    279,337.83/385,494.95 = 158,484.21/x
  3. Step 3: Cross multiply
    279,337.83x = 385,494.95 × 158,484.21
  4. Step 4: Simplify right side
    279,337.83x = 61,094,862,609.74
  5. Step 5: Solve for x
    x = 61,094,862,609.74/279,337.83
  6. Step 6: Final answer
    x = 218,713.17

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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.