Home / 343,904.10-515,856.15-320,576.10

Finding the Fourth Proportional to 343,904.10, 515,856.15 and 320,576.10

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Solution

The fourth proportional to 343,904.10, 515,856.15 and 320,576.10 is: 480,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,904.10 : 515,856.15 = 320,576.10 : x
  2. Step 2: Convert to fraction form
    343,904.10/515,856.15 = 320,576.10/x
  3. Step 3: Cross multiply
    343,904.10x = 515,856.15 × 320,576.10
  4. Step 4: Simplify right side
    343,904.10x = 165,371,152,728.02
  5. Step 5: Solve for x
    x = 165,371,152,728.02/343,904.10
  6. Step 6: Final answer
    x = 480,864.15

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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.