Home / 280,731.16-387,406.74-153,404.44

Finding the Fourth Proportional to 280,731.16, 387,406.74 and 153,404.44

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Solution

The fourth proportional to 280,731.16, 387,406.74 and 153,404.44 is: 211,696.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,731.16 : 387,406.74 = 153,404.44 : x
  2. Step 2: Convert to fraction form
    280,731.16/387,406.74 = 153,404.44/x
  3. Step 3: Cross multiply
    280,731.16x = 387,406.74 × 153,404.44
  4. Step 4: Simplify right side
    280,731.16x = 59,429,914,001.93
  5. Step 5: Solve for x
    x = 59,429,914,001.93/280,731.16
  6. Step 6: Final answer
    x = 211,696.89

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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.