Home / 210,823.29-290,935.62-115,329.76

Finding the Fourth Proportional to 210,823.29, 290,935.62 and 115,329.76

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Solution

The fourth proportional to 210,823.29, 290,935.62 and 115,329.76 is: 159,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,823.29 : 290,935.62 = 115,329.76 : x
  2. Step 2: Convert to fraction form
    210,823.29/290,935.62 = 115,329.76/x
  3. Step 3: Cross multiply
    210,823.29x = 290,935.62 × 115,329.76
  4. Step 4: Simplify right side
    210,823.29x = 33,553,534,502.71
  5. Step 5: Solve for x
    x = 33,553,534,502.71/210,823.29
  6. Step 6: Final answer
    x = 159,154.78

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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.