Home / 210,911.28-291,057.57-115,417.98

Finding the Fourth Proportional to 210,911.28, 291,057.57 and 115,417.98

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Solution

The fourth proportional to 210,911.28, 291,057.57 and 115,417.98 is: 159,276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,911.28 : 291,057.57 = 115,417.98 : x
  2. Step 2: Convert to fraction form
    210,911.28/291,057.57 = 115,417.98/x
  3. Step 3: Cross multiply
    210,911.28x = 291,057.57 × 115,417.98
  4. Step 4: Simplify right side
    210,911.28x = 33,593,276,793.11
  5. Step 5: Solve for x
    x = 33,593,276,793.11/210,911.28
  6. Step 6: Final answer
    x = 159,276.81

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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.