Home / 280,764.33-387,454.98-153,439.93

Finding the Fourth Proportional to 280,764.33, 387,454.98 and 153,439.93

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Solution

The fourth proportional to 280,764.33, 387,454.98 and 153,439.93 is: 211,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,764.33 : 387,454.98 = 153,439.93 : x
  2. Step 2: Convert to fraction form
    280,764.33/387,454.98 = 153,439.93/x
  3. Step 3: Cross multiply
    280,764.33x = 387,454.98 × 153,439.93
  4. Step 4: Simplify right side
    280,764.33x = 59,451,065,009.35
  5. Step 5: Solve for x
    x = 59,451,065,009.35/280,764.33
  6. Step 6: Final answer
    x = 211,747.22

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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.