Home / 210,985.40-291,162.60-115,490.04

Finding the Fourth Proportional to 210,985.40, 291,162.60 and 115,490.04

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Solution

The fourth proportional to 210,985.40, 291,162.60 and 115,490.04 is: 159,377.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,985.40 : 291,162.60 = 115,490.04 : x
  2. Step 2: Convert to fraction form
    210,985.40/291,162.60 = 115,490.04/x
  3. Step 3: Cross multiply
    210,985.40x = 291,162.60 × 115,490.04
  4. Step 4: Simplify right side
    210,985.40x = 33,626,380,320.50
  5. Step 5: Solve for x
    x = 33,626,380,320.50/210,985.40
  6. Step 6: Final answer
    x = 159,377.76

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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.