Home / 287,726.12-397,052.96-158,670.04

Finding the Fourth Proportional to 287,726.12, 397,052.96 and 158,670.04

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Solution

The fourth proportional to 287,726.12, 397,052.96 and 158,670.04 is: 218,959.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,726.12 : 397,052.96 = 158,670.04 : x
  2. Step 2: Convert to fraction form
    287,726.12/397,052.96 = 158,670.04/x
  3. Step 3: Cross multiply
    287,726.12x = 397,052.96 × 158,670.04
  4. Step 4: Simplify right side
    287,726.12x = 63,000,408,003.81
  5. Step 5: Solve for x
    x = 63,000,408,003.81/287,726.12
  6. Step 6: Final answer
    x = 218,959.64

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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.