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Finding the Fourth Proportional to 353,886.39, 530,826.30 and 143,474.31

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Solution

The fourth proportional to 353,886.39, 530,826.30 and 143,474.31 is: 215,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,886.39 : 530,826.30 = 143,474.31 : x
  2. Step 2: Convert to fraction form
    353,886.39/530,826.30 = 143,474.31/x
  3. Step 3: Cross multiply
    353,886.39x = 530,826.30 × 143,474.31
  4. Step 4: Simplify right side
    353,886.39x = 76,159,937,122.35
  5. Step 5: Solve for x
    x = 76,159,937,122.35/353,886.39
  6. Step 6: Final answer
    x = 215,210.13

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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.