Home / 287,399.32-396,575.12-166,538.40

Finding the Fourth Proportional to 287,399.32, 396,575.12 and 166,538.40

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Solution

The fourth proportional to 287,399.32, 396,575.12 and 166,538.40 is: 229,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,399.32 : 396,575.12 = 166,538.40 : x
  2. Step 2: Convert to fraction form
    287,399.32/396,575.12 = 166,538.40/x
  3. Step 3: Cross multiply
    287,399.32x = 396,575.12 × 166,538.40
  4. Step 4: Simplify right side
    287,399.32x = 66,044,985,964.61
  5. Step 5: Solve for x
    x = 66,044,985,964.61/287,399.32
  6. Step 6: Final answer
    x = 229,802.17

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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.