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Finding the Fourth Proportional to 374,442, 516,648.54 and 221,488.62

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Solution

The fourth proportional to 374,442, 516,648.54 and 221,488.62 is: 305,606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,442 : 516,648.54 = 221,488.62 : x
  2. Step 2: Convert to fraction form
    374,442/516,648.54 = 221,488.62/x
  3. Step 3: Cross multiply
    374,442x = 516,648.54 × 221,488.62
  4. Step 4: Simplify right side
    374,442x = 114,431,772,149.62
  5. Step 5: Solve for x
    x = 114,431,772,149.62/374,442
  6. Step 6: Final answer
    x = 305,606.13

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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.