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Finding the Fourth Proportional to 353,187.40, 530,817.90 and 307,568.20

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Solution

The fourth proportional to 353,187.40, 530,817.90 and 307,568.20 is: 462,255.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,187.40 : 530,817.90 = 307,568.20 : x
  2. Step 2: Convert to fraction form
    353,187.40/530,817.90 = 307,568.20/x
  3. Step 3: Cross multiply
    353,187.40x = 530,817.90 × 307,568.20
  4. Step 4: Simplify right side
    353,187.40x = 163,262,706,030.78
  5. Step 5: Solve for x
    x = 163,262,706,030.78/353,187.40
  6. Step 6: Final answer
    x = 462,255.18

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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.