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Finding the Fourth Proportional to 466,398.40, 643,519.20 and 265,305.28

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Solution

The fourth proportional to 466,398.40, 643,519.20 and 265,305.28 is: 366,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,398.40 : 643,519.20 = 265,305.28 : x
  2. Step 2: Convert to fraction form
    466,398.40/643,519.20 = 265,305.28/x
  3. Step 3: Cross multiply
    466,398.40x = 643,519.20 × 265,305.28
  4. Step 4: Simplify right side
    466,398.40x = 170,729,041,541.38
  5. Step 5: Solve for x
    x = 170,729,041,541.38/466,398.40
  6. Step 6: Final answer
    x = 366,058.38

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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.