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Finding the Fourth Proportional to 424,344.19, 636,820.30 and 154,471.76

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Solution

The fourth proportional to 424,344.19, 636,820.30 and 154,471.76 is: 231,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,344.19 : 636,820.30 = 154,471.76 : x
  2. Step 2: Convert to fraction form
    424,344.19/636,820.30 = 154,471.76/x
  3. Step 3: Cross multiply
    424,344.19x = 636,820.30 × 154,471.76
  4. Step 4: Simplify right side
    424,344.19x = 98,370,752,544.73
  5. Step 5: Solve for x
    x = 98,370,752,544.73/424,344.19
  6. Step 6: Final answer
    x = 231,818.31

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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.