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Finding the Fourth Proportional to 353,875.39, 530,809.84 and 143,463.31

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Solution

The fourth proportional to 353,875.39, 530,809.84 and 143,463.31 is: 215,193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,875.39 : 530,809.84 = 143,463.31 : x
  2. Step 2: Convert to fraction form
    353,875.39/530,809.84 = 143,463.31/x
  3. Step 3: Cross multiply
    353,875.39x = 530,809.84 × 143,463.31
  4. Step 4: Simplify right side
    353,875.39x = 76,151,736,626.97
  5. Step 5: Solve for x
    x = 76,151,736,626.97/353,875.39
  6. Step 6: Final answer
    x = 215,193.65

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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.