Home / 287,434.72-396,672.18-160,110.40

Finding the Fourth Proportional to 287,434.72, 396,672.18 and 160,110.40

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Solution

The fourth proportional to 287,434.72, 396,672.18 and 160,110.40 is: 220,959.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,434.72 : 396,672.18 = 160,110.40 : x
  2. Step 2: Convert to fraction form
    287,434.72/396,672.18 = 160,110.40/x
  3. Step 3: Cross multiply
    287,434.72x = 396,672.18 × 160,110.40
  4. Step 4: Simplify right side
    287,434.72x = 63,511,341,408.67
  5. Step 5: Solve for x
    x = 63,511,341,408.67/287,434.72
  6. Step 6: Final answer
    x = 220,959.18

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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.