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Finding the Fourth Proportional to 280,792.54, 387,448.90 and 159,936.18

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Solution

The fourth proportional to 280,792.54, 387,448.90 and 159,936.18 is: 220,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,792.54 : 387,448.90 = 159,936.18 : x
  2. Step 2: Convert to fraction form
    280,792.54/387,448.90 = 159,936.18/x
  3. Step 3: Cross multiply
    280,792.54x = 387,448.90 × 159,936.18
  4. Step 4: Simplify right side
    280,792.54x = 61,967,097,011.20
  5. Step 5: Solve for x
    x = 61,967,097,011.20/280,792.54
  6. Step 6: Final answer
    x = 220,686.41

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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.