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Finding the Fourth Proportional to 453,138.36, 679,663.59 and 137,598

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Solution

The fourth proportional to 453,138.36, 679,663.59 and 137,598 is: 206,383.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,138.36 : 679,663.59 = 137,598 : x
  2. Step 2: Convert to fraction form
    453,138.36/679,663.59 = 137,598/x
  3. Step 3: Cross multiply
    453,138.36x = 679,663.59 × 137,598
  4. Step 4: Simplify right side
    453,138.36x = 93,520,350,656.82
  5. Step 5: Solve for x
    x = 93,520,350,656.82/453,138.36
  6. Step 6: Final answer
    x = 206,383.65

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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.