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Finding the Fourth Proportional to 280,957.66, 387,759.58 and 158,475.18

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Solution

The fourth proportional to 280,957.66, 387,759.58 and 158,475.18 is: 218,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,957.66 : 387,759.58 = 158,475.18 : x
  2. Step 2: Convert to fraction form
    280,957.66/387,759.58 = 158,475.18/x
  3. Step 3: Cross multiply
    280,957.66x = 387,759.58 × 158,475.18
  4. Step 4: Simplify right side
    280,957.66x = 61,450,270,740.85
  5. Step 5: Solve for x
    x = 61,450,270,740.85/280,957.66
  6. Step 6: Final answer
    x = 218,717.19

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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.