Home / 424,210.80-636,180.96-139,848.35

Finding the Fourth Proportional to 424,210.80, 636,180.96 and 139,848.35

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Solution

The fourth proportional to 424,210.80, 636,180.96 and 139,848.35 is: 209,727.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,210.80 : 636,180.96 = 139,848.35 : x
  2. Step 2: Convert to fraction form
    424,210.80/636,180.96 = 139,848.35/x
  3. Step 3: Cross multiply
    424,210.80x = 636,180.96 × 139,848.35
  4. Step 4: Simplify right side
    424,210.80x = 88,968,857,557.42
  5. Step 5: Solve for x
    x = 88,968,857,557.42/424,210.80
  6. Step 6: Final answer
    x = 209,727.94

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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.