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Finding the Fourth Proportional to 251,598.12, 347,200.56 and 138,420.96

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Solution

The fourth proportional to 251,598.12, 347,200.56 and 138,420.96 is: 191,018.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,598.12 : 347,200.56 = 138,420.96 : x
  2. Step 2: Convert to fraction form
    251,598.12/347,200.56 = 138,420.96/x
  3. Step 3: Cross multiply
    251,598.12x = 347,200.56 × 138,420.96
  4. Step 4: Simplify right side
    251,598.12x = 48,059,834,827.74
  5. Step 5: Solve for x
    x = 48,059,834,827.74/251,598.12
  6. Step 6: Final answer
    x = 191,018.26

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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.