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Finding the Fourth Proportional to 280,887.29, 387,515.54 and 178,894.47

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Solution

The fourth proportional to 280,887.29, 387,515.54 and 178,894.47 is: 246,805.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,887.29 : 387,515.54 = 178,894.47 : x
  2. Step 2: Convert to fraction form
    280,887.29/387,515.54 = 178,894.47/x
  3. Step 3: Cross multiply
    280,887.29x = 387,515.54 × 178,894.47
  4. Step 4: Simplify right side
    280,887.29x = 69,324,389,045.48
  5. Step 5: Solve for x
    x = 69,324,389,045.48/280,887.29
  6. Step 6: Final answer
    x = 246,805.00

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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.