Home / 210,921.24-291,079.98-115,436.28

Finding the Fourth Proportional to 210,921.24, 291,079.98 and 115,436.28

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Solution

The fourth proportional to 210,921.24, 291,079.98 and 115,436.28 is: 159,306.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,921.24 : 291,079.98 = 115,436.28 : x
  2. Step 2: Convert to fraction form
    210,921.24/291,079.98 = 115,436.28/x
  3. Step 3: Cross multiply
    210,921.24x = 291,079.98 × 115,436.28
  4. Step 4: Simplify right side
    210,921.24x = 33,601,190,073.67
  5. Step 5: Solve for x
    x = 33,601,190,073.67/210,921.24
  6. Step 6: Final answer
    x = 159,306.81

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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.