Home / 388,098.95-581,502.51-135,240.06

Finding the Fourth Proportional to 388,098.95, 581,502.51 and 135,240.06

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Solution

The fourth proportional to 388,098.95, 581,502.51 and 135,240.06 is: 202,635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,098.95 : 581,502.51 = 135,240.06 : x
  2. Step 2: Convert to fraction form
    388,098.95/581,502.51 = 135,240.06/x
  3. Step 3: Cross multiply
    388,098.95x = 581,502.51 × 135,240.06
  4. Step 4: Simplify right side
    388,098.95x = 78,642,436,523.19
  5. Step 5: Solve for x
    x = 78,642,436,523.19/388,098.95
  6. Step 6: Final answer
    x = 202,635.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.