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Finding the Fourth Proportional to 187,348.40, 280,891.20 and 69,004.40

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Solution

The fourth proportional to 187,348.40, 280,891.20 and 69,004.40 is: 103,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,348.40 : 280,891.20 = 69,004.40 : x
  2. Step 2: Convert to fraction form
    187,348.40/280,891.20 = 69,004.40/x
  3. Step 3: Cross multiply
    187,348.40x = 280,891.20 × 69,004.40
  4. Step 4: Simplify right side
    187,348.40x = 19,382,728,721.28
  5. Step 5: Solve for x
    x = 19,382,728,721.28/187,348.40
  6. Step 6: Final answer
    x = 103,458.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.