Home / 218,720.17-328,080.39-60,952.78

Finding the Fourth Proportional to 218,720.17, 328,080.39 and 60,952.78

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Solution

The fourth proportional to 218,720.17, 328,080.39 and 60,952.78 is: 91,429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,720.17 : 328,080.39 = 60,952.78 : x
  2. Step 2: Convert to fraction form
    218,720.17/328,080.39 = 60,952.78/x
  3. Step 3: Cross multiply
    218,720.17x = 328,080.39 × 60,952.78
  4. Step 4: Simplify right side
    218,720.17x = 19,997,411,833.98
  5. Step 5: Solve for x
    x = 19,997,411,833.98/218,720.17
  6. Step 6: Final answer
    x = 91,429.21

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1.5x scale

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.