Home / 287,565.10-396,841.42-166,778.02

Finding the Fourth Proportional to 287,565.10, 396,841.42 and 166,778.02

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Solution

The fourth proportional to 287,565.10, 396,841.42 and 166,778.02 is: 230,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,565.10 : 396,841.42 = 166,778.02 : x
  2. Step 2: Convert to fraction form
    287,565.10/396,841.42 = 166,778.02/x
  3. Step 3: Cross multiply
    287,565.10x = 396,841.42 × 166,778.02
  4. Step 4: Simplify right side
    287,565.10x = 66,184,426,281.59
  5. Step 5: Solve for x
    x = 66,184,426,281.59/287,565.10
  6. Step 6: Final answer
    x = 230,154.59

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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.