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Finding the Fourth Proportional to 250,835.78, 376,155.65 and 90,873.74

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Solution

The fourth proportional to 250,835.78, 376,155.65 and 90,873.74 is: 136,275.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,835.78 : 376,155.65 = 90,873.74 : x
  2. Step 2: Convert to fraction form
    250,835.78/376,155.65 = 90,873.74/x
  3. Step 3: Cross multiply
    250,835.78x = 376,155.65 × 90,873.74
  4. Step 4: Simplify right side
    250,835.78x = 34,182,668,402.48
  5. Step 5: Solve for x
    x = 34,182,668,402.48/250,835.78
  6. Step 6: Final answer
    x = 136,275.09

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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.