Home / 287,540.20-396,802.02-160,215.40

Finding the Fourth Proportional to 287,540.20, 396,802.02 and 160,215.40

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Solution

The fourth proportional to 287,540.20, 396,802.02 and 160,215.40 is: 221,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,540.20 : 396,802.02 = 160,215.40 : x
  2. Step 2: Convert to fraction form
    287,540.20/396,802.02 = 160,215.40/x
  3. Step 3: Cross multiply
    287,540.20x = 396,802.02 × 160,215.40
  4. Step 4: Simplify right side
    287,540.20x = 63,573,794,355.11
  5. Step 5: Solve for x
    x = 63,573,794,355.11/287,540.20
  6. Step 6: Final answer
    x = 221,095.33

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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.