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Finding the Fourth Proportional to 253,386, 349,675.20 and 140,211.18

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Solution

The fourth proportional to 253,386, 349,675.20 and 140,211.18 is: 193,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,386 : 349,675.20 = 140,211.18 : x
  2. Step 2: Convert to fraction form
    253,386/349,675.20 = 140,211.18/x
  3. Step 3: Cross multiply
    253,386x = 349,675.20 × 140,211.18
  4. Step 4: Simplify right side
    253,386x = 49,028,372,408.74
  5. Step 5: Solve for x
    x = 49,028,372,408.74/253,386
  6. Step 6: Final answer
    x = 193,492.82

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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.