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Finding the Fourth Proportional to 343,657.16, 515,559.88 and 103,751.15

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Solution

The fourth proportional to 343,657.16, 515,559.88 and 103,751.15 is: 155,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,657.16 : 515,559.88 = 103,751.15 : x
  2. Step 2: Convert to fraction form
    343,657.16/515,559.88 = 103,751.15/x
  3. Step 3: Cross multiply
    343,657.16x = 515,559.88 × 103,751.15
  4. Step 4: Simplify right side
    343,657.16x = 53,489,930,443.86
  5. Step 5: Solve for x
    x = 53,489,930,443.86/343,657.16
  6. Step 6: Final answer
    x = 155,649.11

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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.