Home / 287,439.35-396,678.56-160,115.00

Finding the Fourth Proportional to 287,439.35, 396,678.56 and 160,115.00

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Solution

The fourth proportional to 287,439.35, 396,678.56 and 160,115.00 is: 220,965.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,439.35 : 396,678.56 = 160,115.00 : x
  2. Step 2: Convert to fraction form
    287,439.35/396,678.56 = 160,115.00/x
  3. Step 3: Cross multiply
    287,439.35x = 396,678.56 × 160,115.00
  4. Step 4: Simplify right side
    287,439.35x = 63,514,184,850.43
  5. Step 5: Solve for x
    x = 63,514,184,850.43/287,439.35
  6. Step 6: Final answer
    x = 220,965.52

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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.