Home / 388,631.43-536,312.45-225,319.68

Finding the Fourth Proportional to 388,631.43, 536,312.45 and 225,319.68

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Solution

The fourth proportional to 388,631.43, 536,312.45 and 225,319.68 is: 310,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,631.43 : 536,312.45 = 225,319.68 : x
  2. Step 2: Convert to fraction form
    388,631.43/536,312.45 = 225,319.68/x
  3. Step 3: Cross multiply
    388,631.43x = 536,312.45 × 225,319.68
  4. Step 4: Simplify right side
    388,631.43x = 120,841,750,177.32
  5. Step 5: Solve for x
    x = 120,841,750,177.32/388,631.43
  6. Step 6: Final answer
    x = 310,941.78

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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.