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Finding the Fourth Proportional to 269,980, 372,572.40 and 150,748

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Solution

The fourth proportional to 269,980, 372,572.40 and 150,748 is: 208,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,980 : 372,572.40 = 150,748 : x
  2. Step 2: Convert to fraction form
    269,980/372,572.40 = 150,748/x
  3. Step 3: Cross multiply
    269,980x = 372,572.40 × 150,748
  4. Step 4: Simplify right side
    269,980x = 56,164,544,155.20
  5. Step 5: Solve for x
    x = 56,164,544,155.20/269,980
  6. Step 6: Final answer
    x = 208,032.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.