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Finding the Fourth Proportional to 423,270.97, 584,140.19 and 279,782.17

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Solution

The fourth proportional to 423,270.97, 584,140.19 and 279,782.17 is: 386,116.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,270.97 : 584,140.19 = 279,782.17 : x
  2. Step 2: Convert to fraction form
    423,270.97/584,140.19 = 279,782.17/x
  3. Step 3: Cross multiply
    423,270.97x = 584,140.19 × 279,782.17
  4. Step 4: Simplify right side
    423,270.97x = 163,432,008,543.50
  5. Step 5: Solve for x
    x = 163,432,008,543.50/423,270.97
  6. Step 6: Final answer
    x = 386,116.74

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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.