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Finding the Fourth Proportional to 543,154.12, 749,642.79 and 316,799.62

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Solution

The fourth proportional to 543,154.12, 749,642.79 and 316,799.62 is: 437,236.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,154.12 : 749,642.79 = 316,799.62 : x
  2. Step 2: Convert to fraction form
    543,154.12/749,642.79 = 316,799.62/x
  3. Step 3: Cross multiply
    543,154.12x = 749,642.79 × 316,799.62
  4. Step 4: Simplify right side
    543,154.12x = 237,486,551,007.74
  5. Step 5: Solve for x
    x = 237,486,551,007.74/543,154.12
  6. Step 6: Final answer
    x = 437,236.03

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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.