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Finding the Fourth Proportional to 234,408.15, 323,484.80 and 126,978.18

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Solution

The fourth proportional to 234,408.15, 323,484.80 and 126,978.18 is: 175,230.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,408.15 : 323,484.80 = 126,978.18 : x
  2. Step 2: Convert to fraction form
    234,408.15/323,484.80 = 126,978.18/x
  3. Step 3: Cross multiply
    234,408.15x = 323,484.80 × 126,978.18
  4. Step 4: Simplify right side
    234,408.15x = 41,075,510,526.77
  5. Step 5: Solve for x
    x = 41,075,510,526.77/234,408.15
  6. Step 6: Final answer
    x = 175,230.73

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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.