Home / 388,461.43-536,151.23-218,695.55

Finding the Fourth Proportional to 388,461.43, 536,151.23 and 218,695.55

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Solution

The fourth proportional to 388,461.43, 536,151.23 and 218,695.55 is: 301,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,461.43 : 536,151.23 = 218,695.55 : x
  2. Step 2: Convert to fraction form
    388,461.43/536,151.23 = 218,695.55/x
  3. Step 3: Cross multiply
    388,461.43x = 536,151.23 × 218,695.55
  4. Step 4: Simplify right side
    388,461.43x = 117,253,888,189.75
  5. Step 5: Solve for x
    x = 117,253,888,189.75/388,461.43
  6. Step 6: Final answer
    x = 301,841.78

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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.