Home / 423,905.24-636,104.10-139,802.60

Finding the Fourth Proportional to 423,905.24, 636,104.10 and 139,802.60

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Solution

The fourth proportional to 423,905.24, 636,104.10 and 139,802.60 is: 209,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,905.24 : 636,104.10 = 139,802.60 : x
  2. Step 2: Convert to fraction form
    423,905.24/636,104.10 = 139,802.60/x
  3. Step 3: Cross multiply
    423,905.24x = 636,104.10 × 139,802.60
  4. Step 4: Simplify right side
    423,905.24x = 88,929,007,050.66
  5. Step 5: Solve for x
    x = 88,929,007,050.66/423,905.24
  6. Step 6: Final answer
    x = 209,785.11

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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.