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Finding the Fourth Proportional to 356,819.09, 535,228.63 and 120,141.95

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Solution

The fourth proportional to 356,819.09, 535,228.63 and 120,141.95 is: 180,212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,819.09 : 535,228.63 = 120,141.95 : x
  2. Step 2: Convert to fraction form
    356,819.09/535,228.63 = 120,141.95/x
  3. Step 3: Cross multiply
    356,819.09x = 535,228.63 × 120,141.95
  4. Step 4: Simplify right side
    356,819.09x = 64,303,408,327.53
  5. Step 5: Solve for x
    x = 64,303,408,327.53/356,819.09
  6. Step 6: Final answer
    x = 180,212.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.