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Finding the Fourth Proportional to 353,642.22, 530,458.08 and 87,402.72

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Solution

The fourth proportional to 353,642.22, 530,458.08 and 87,402.72 is: 131,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,642.22 : 530,458.08 = 87,402.72 : x
  2. Step 2: Convert to fraction form
    353,642.22/530,458.08 = 87,402.72/x
  3. Step 3: Cross multiply
    353,642.22x = 530,458.08 × 87,402.72
  4. Step 4: Simplify right side
    353,642.22x = 46,363,479,037.98
  5. Step 5: Solve for x
    x = 46,363,479,037.98/353,642.22
  6. Step 6: Final answer
    x = 131,102.78

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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.