Home / 280,426.06-386,985.96-153,101.65

Finding the Fourth Proportional to 280,426.06, 386,985.96 and 153,101.65

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Solution

The fourth proportional to 280,426.06, 386,985.96 and 153,101.65 is: 211,279.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,426.06 : 386,985.96 = 153,101.65 : x
  2. Step 2: Convert to fraction form
    280,426.06/386,985.96 = 153,101.65/x
  3. Step 3: Cross multiply
    280,426.06x = 386,985.96 × 153,101.65
  4. Step 4: Simplify right side
    280,426.06x = 59,248,189,002.83
  5. Step 5: Solve for x
    x = 59,248,189,002.83/280,426.06
  6. Step 6: Final answer
    x = 211,279.18

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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.