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Finding the Fourth Proportional to 438,555.76, 605,207 and 237,351.76

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Solution

The fourth proportional to 438,555.76, 605,207 and 237,351.76 is: 327,545.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,555.76 : 605,207 = 237,351.76 : x
  2. Step 2: Convert to fraction form
    438,555.76/605,207 = 237,351.76/x
  3. Step 3: Cross multiply
    438,555.76x = 605,207 × 237,351.76
  4. Step 4: Simplify right side
    438,555.76x = 143,646,946,614.32
  5. Step 5: Solve for x
    x = 143,646,946,614.32/438,555.76
  6. Step 6: Final answer
    x = 327,545.46

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1.5x scale

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.