Home / 345,864.06-515,357.90-308,134.22

Finding the Fourth Proportional to 345,864.06, 515,357.90 and 308,134.22

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Solution

The fourth proportional to 345,864.06, 515,357.90 and 308,134.22 is: 459,138.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,864.06 : 515,357.90 = 308,134.22 : x
  2. Step 2: Convert to fraction form
    345,864.06/515,357.90 = 308,134.22/x
  3. Step 3: Cross multiply
    345,864.06x = 515,357.90 × 308,134.22
  4. Step 4: Simplify right side
    345,864.06x = 158,799,401,575.38
  5. Step 5: Solve for x
    x = 158,799,401,575.38/345,864.06
  6. Step 6: Final answer
    x = 459,138.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.