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Finding the Fourth Proportional to 353,499.76, 530,169.49 and 100,774.63

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Solution

The fourth proportional to 353,499.76, 530,169.49 and 100,774.63 is: 151,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,499.76 : 530,169.49 = 100,774.63 : x
  2. Step 2: Convert to fraction form
    353,499.76/530,169.49 = 100,774.63/x
  3. Step 3: Cross multiply
    353,499.76x = 530,169.49 × 100,774.63
  4. Step 4: Simplify right side
    353,499.76x = 53,427,634,192.04
  5. Step 5: Solve for x
    x = 53,427,634,192.04/353,499.76
  6. Step 6: Final answer
    x = 151,139.10

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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.