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Finding the Fourth Proportional to 423,271.97, 584,141.57 and 279,783.17

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Solution

The fourth proportional to 423,271.97, 584,141.57 and 279,783.17 is: 386,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,271.97 : 584,141.57 = 279,783.17 : x
  2. Step 2: Convert to fraction form
    423,271.97/584,141.57 = 279,783.17/x
  3. Step 3: Cross multiply
    423,271.97x = 584,141.57 × 279,783.17
  4. Step 4: Simplify right side
    423,271.97x = 163,432,978,784.46
  5. Step 5: Solve for x
    x = 163,432,978,784.46/423,271.97
  6. Step 6: Final answer
    x = 386,118.12

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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.