Home / 210,979.38-291,151.86-115,492.11

Finding the Fourth Proportional to 210,979.38, 291,151.86 and 115,492.11

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Solution

The fourth proportional to 210,979.38, 291,151.86 and 115,492.11 is: 159,379.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,979.38 : 291,151.86 = 115,492.11 : x
  2. Step 2: Convert to fraction form
    210,979.38/291,151.86 = 115,492.11/x
  3. Step 3: Cross multiply
    210,979.38x = 291,151.86 × 115,492.11
  4. Step 4: Simplify right side
    210,979.38x = 33,625,742,641.82
  5. Step 5: Solve for x
    x = 33,625,742,641.82/210,979.38
  6. Step 6: Final answer
    x = 159,379.28

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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.