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Finding the Fourth Proportional to 253,374.04, 349,656.20 and 138,652.70

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Solution

The fourth proportional to 253,374.04, 349,656.20 and 138,652.70 is: 191,340.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,374.04 : 349,656.20 = 138,652.70 : x
  2. Step 2: Convert to fraction form
    253,374.04/349,656.20 = 138,652.70/x
  3. Step 3: Cross multiply
    253,374.04x = 349,656.20 × 138,652.70
  4. Step 4: Simplify right side
    253,374.04x = 48,480,776,201.74
  5. Step 5: Solve for x
    x = 48,480,776,201.74/253,374.04
  6. Step 6: Final answer
    x = 191,340.74

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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.