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Finding the Fourth Proportional to 343,959.30, 515,501.55 and 306,342.90

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Solution

The fourth proportional to 343,959.30, 515,501.55 and 306,342.90 is: 459,124.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,959.30 : 515,501.55 = 306,342.90 : x
  2. Step 2: Convert to fraction form
    343,959.30/515,501.55 = 306,342.90/x
  3. Step 3: Cross multiply
    343,959.30x = 515,501.55 × 306,342.90
  4. Step 4: Simplify right side
    343,959.30x = 157,920,239,781.50
  5. Step 5: Solve for x
    x = 157,920,239,781.50/343,959.30
  6. Step 6: Final answer
    x = 459,124.79

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1.5x scale

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.