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Finding the Fourth Proportional to 340,501.68, 510,781.92 and 87,780.03

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Solution

The fourth proportional to 340,501.68, 510,781.92 and 87,780.03 is: 131,677.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,501.68 : 510,781.92 = 87,780.03 : x
  2. Step 2: Convert to fraction form
    340,501.68/510,781.92 = 87,780.03/x
  3. Step 3: Cross multiply
    340,501.68x = 510,781.92 × 87,780.03
  4. Step 4: Simplify right side
    340,501.68x = 44,836,452,054.80
  5. Step 5: Solve for x
    x = 44,836,452,054.80/340,501.68
  6. Step 6: Final answer
    x = 131,677.63

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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.