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Finding the Fourth Proportional to 424,347.63, 636,521.45 and 202,057.71

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Solution

The fourth proportional to 424,347.63, 636,521.45 and 202,057.71 is: 303,086.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,347.63 : 636,521.45 = 202,057.71 : x
  2. Step 2: Convert to fraction form
    424,347.63/636,521.45 = 202,057.71/x
  3. Step 3: Cross multiply
    424,347.63x = 636,521.45 × 202,057.71
  4. Step 4: Simplify right side
    424,347.63x = 128,614,065,542.59
  5. Step 5: Solve for x
    x = 128,614,065,542.59/424,347.63
  6. Step 6: Final answer
    x = 303,086.57

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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.