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Finding the Fourth Proportional to 287,386.24, 396,605.24 and 160,061.84

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Solution

The fourth proportional to 287,386.24, 396,605.24 and 160,061.84 is: 220,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,386.24 : 396,605.24 = 160,061.84 : x
  2. Step 2: Convert to fraction form
    287,386.24/396,605.24 = 160,061.84/x
  3. Step 3: Cross multiply
    287,386.24x = 396,605.24 × 160,061.84
  4. Step 4: Simplify right side
    287,386.24x = 63,481,364,468.04
  5. Step 5: Solve for x
    x = 63,481,364,468.04/287,386.24
  6. Step 6: Final answer
    x = 220,892.15

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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.