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Finding the Fourth Proportional to 423,272.97, 584,142.95 and 279,784.17

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Solution

The fourth proportional to 423,272.97, 584,142.95 and 279,784.17 is: 386,119.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,272.97 : 584,142.95 = 279,784.17 : x
  2. Step 2: Convert to fraction form
    423,272.97/584,142.95 = 279,784.17/x
  3. Step 3: Cross multiply
    423,272.97x = 584,142.95 × 279,784.17
  4. Step 4: Simplify right side
    423,272.97x = 163,433,950,427.10
  5. Step 5: Solve for x
    x = 163,433,950,427.10/423,272.97
  6. Step 6: Final answer
    x = 386,119.51

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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.