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Finding the Fourth Proportional to 515,290.61, 772,924.30 and 178,310.93

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Solution

The fourth proportional to 515,290.61, 772,924.30 and 178,310.93 is: 267,462.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,290.61 : 772,924.30 = 178,310.93 : x
  2. Step 2: Convert to fraction form
    515,290.61/772,924.30 = 178,310.93/x
  3. Step 3: Cross multiply
    515,290.61x = 772,924.30 × 178,310.93
  4. Step 4: Simplify right side
    515,290.61x = 137,820,850,752.60
  5. Step 5: Solve for x
    x = 137,820,850,752.60/515,290.61
  6. Step 6: Final answer
    x = 267,462.38

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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.