Home / 424,127.71-636,399.10-199,510.81

Finding the Fourth Proportional to 424,127.71, 636,399.10 and 199,510.81

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Solution

The fourth proportional to 424,127.71, 636,399.10 and 199,510.81 is: 299,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,127.71 : 636,399.10 = 199,510.81 : x
  2. Step 2: Convert to fraction form
    424,127.71/636,399.10 = 199,510.81/x
  3. Step 3: Cross multiply
    424,127.71x = 636,399.10 × 199,510.81
  4. Step 4: Simplify right side
    424,127.71x = 126,968,498,582.66
  5. Step 5: Solve for x
    x = 126,968,498,582.66/424,127.71
  6. Step 6: Final answer
    x = 299,363.84

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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.