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Finding the Fourth Proportional to 251,897.44, 347,614.32 and 138,730.72

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Solution

The fourth proportional to 251,897.44, 347,614.32 and 138,730.72 is: 191,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,897.44 : 347,614.32 = 138,730.72 : x
  2. Step 2: Convert to fraction form
    251,897.44/347,614.32 = 138,730.72/x
  3. Step 3: Cross multiply
    251,897.44x = 347,614.32 × 138,730.72
  4. Step 4: Simplify right side
    251,897.44x = 48,224,784,895.91
  5. Step 5: Solve for x
    x = 48,224,784,895.91/251,897.44
  6. Step 6: Final answer
    x = 191,446.11

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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.