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Finding the Fourth Proportional to 402,285.76, 555,154.56 and 223,437.76

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Solution

The fourth proportional to 402,285.76, 555,154.56 and 223,437.76 is: 308,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,285.76 : 555,154.56 = 223,437.76 : x
  2. Step 2: Convert to fraction form
    402,285.76/555,154.56 = 223,437.76/x
  3. Step 3: Cross multiply
    402,285.76x = 555,154.56 × 223,437.76
  4. Step 4: Simplify right side
    402,285.76x = 124,042,491,340.19
  5. Step 5: Solve for x
    x = 124,042,491,340.19/402,285.76
  6. Step 6: Final answer
    x = 308,344.23

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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.