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Finding the Fourth Proportional to 340,488.78, 510,741.39 and 87,775.44

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Solution

The fourth proportional to 340,488.78, 510,741.39 and 87,775.44 is: 131,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,488.78 : 510,741.39 = 87,775.44 : x
  2. Step 2: Convert to fraction form
    340,488.78/510,741.39 = 87,775.44/x
  3. Step 3: Cross multiply
    340,488.78x = 510,741.39 × 87,775.44
  4. Step 4: Simplify right side
    340,488.78x = 44,830,550,233.46
  5. Step 5: Solve for x
    x = 44,830,550,233.46/340,488.78
  6. Step 6: Final answer
    x = 131,665.28

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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.