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Finding the Fourth Proportional to 483,278.40, 724,204.80 and 350,438.40

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Solution

The fourth proportional to 483,278.40, 724,204.80 and 350,438.40 is: 525,140.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,278.40 : 724,204.80 = 350,438.40 : x
  2. Step 2: Convert to fraction form
    483,278.40/724,204.80 = 350,438.40/x
  3. Step 3: Cross multiply
    483,278.40x = 724,204.80 × 350,438.40
  4. Step 4: Simplify right side
    483,278.40x = 253,789,171,384.32
  5. Step 5: Solve for x
    x = 253,789,171,384.32/483,278.40
  6. Step 6: Final answer
    x = 525,140.73

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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.