Home / 279,411.47-385,577.13-158,545.55

Finding the Fourth Proportional to 279,411.47, 385,577.13 and 158,545.55

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Solution

The fourth proportional to 279,411.47, 385,577.13 and 158,545.55 is: 218,786.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,411.47 : 385,577.13 = 158,545.55 : x
  2. Step 2: Convert to fraction form
    279,411.47/385,577.13 = 158,545.55/x
  3. Step 3: Cross multiply
    279,411.47x = 385,577.13 × 158,545.55
  4. Step 4: Simplify right side
    279,411.47x = 61,131,536,215.39
  5. Step 5: Solve for x
    x = 61,131,536,215.39/279,411.47
  6. Step 6: Final answer
    x = 218,786.79

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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.