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Finding the Fourth Proportional to 251,665.92, 347,298.35 and 138,488.67

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Solution

The fourth proportional to 251,665.92, 347,298.35 and 138,488.67 is: 191,114.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,665.92 : 347,298.35 = 138,488.67 : x
  2. Step 2: Convert to fraction form
    251,665.92/347,298.35 = 138,488.67/x
  3. Step 3: Cross multiply
    251,665.92x = 347,298.35 × 138,488.67
  4. Step 4: Simplify right side
    251,665.92x = 48,096,885,892.25
  5. Step 5: Solve for x
    x = 48,096,885,892.25/251,665.92
  6. Step 6: Final answer
    x = 191,114.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.