Home / 261,004.32-391,636.08-103,345.92

Finding the Fourth Proportional to 261,004.32, 391,636.08 and 103,345.92

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Solution

The fourth proportional to 261,004.32, 391,636.08 and 103,345.92 is: 155,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,004.32 : 391,636.08 = 103,345.92 : x
  2. Step 2: Convert to fraction form
    261,004.32/391,636.08 = 103,345.92/x
  3. Step 3: Cross multiply
    261,004.32x = 391,636.08 × 103,345.92
  4. Step 4: Simplify right side
    261,004.32x = 40,473,990,992.79
  5. Step 5: Solve for x
    x = 40,473,990,992.79/261,004.32
  6. Step 6: Final answer
    x = 155,070.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.