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Finding the Fourth Proportional to 343,640.68, 515,535.18 and 103,734.72

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Solution

The fourth proportional to 343,640.68, 515,535.18 and 103,734.72 is: 155,624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,640.68 : 515,535.18 = 103,734.72 : x
  2. Step 2: Convert to fraction form
    343,640.68/515,535.18 = 103,734.72/x
  3. Step 3: Cross multiply
    343,640.68x = 515,535.18 × 103,734.72
  4. Step 4: Simplify right side
    343,640.68x = 53,478,897,547.45
  5. Step 5: Solve for x
    x = 53,478,897,547.45/343,640.68
  6. Step 6: Final answer
    x = 155,624.47

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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.