Home / 287,677.13-396,999.65-160,339.05

Finding the Fourth Proportional to 287,677.13, 396,999.65 and 160,339.05

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Solution

The fourth proportional to 287,677.13, 396,999.65 and 160,339.05 is: 221,270.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,677.13 : 396,999.65 = 160,339.05 : x
  2. Step 2: Convert to fraction form
    287,677.13/396,999.65 = 160,339.05/x
  3. Step 3: Cross multiply
    287,677.13x = 396,999.65 × 160,339.05
  4. Step 4: Simplify right side
    287,677.13x = 63,654,545,929.64
  5. Step 5: Solve for x
    x = 63,654,545,929.64/287,677.13
  6. Step 6: Final answer
    x = 221,270.79

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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.