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Finding the Fourth Proportional to 353,426.80, 530,060.64 and 100,702.12

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Solution

The fourth proportional to 353,426.80, 530,060.64 and 100,702.12 is: 151,030.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,426.80 : 530,060.64 = 100,702.12 : x
  2. Step 2: Convert to fraction form
    353,426.80/530,060.64 = 100,702.12/x
  3. Step 3: Cross multiply
    353,426.80x = 530,060.64 × 100,702.12
  4. Step 4: Simplify right side
    353,426.80x = 53,378,230,176.56
  5. Step 5: Solve for x
    x = 53,378,230,176.56/353,426.80
  6. Step 6: Final answer
    x = 151,030.51

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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.