Home / 280,167.72-386,623.80-152,843.28

Finding the Fourth Proportional to 280,167.72, 386,623.80 and 152,843.28

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Solution

The fourth proportional to 280,167.72, 386,623.80 and 152,843.28 is: 210,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,167.72 : 386,623.80 = 152,843.28 : x
  2. Step 2: Convert to fraction form
    280,167.72/386,623.80 = 152,843.28/x
  3. Step 3: Cross multiply
    280,167.72x = 386,623.80 × 152,843.28
  4. Step 4: Simplify right side
    280,167.72x = 59,092,849,718.06
  5. Step 5: Solve for x
    x = 59,092,849,718.06/280,167.72
  6. Step 6: Final answer
    x = 210,919.55

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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.