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Finding the Fourth Proportional to 354,551.20, 531,049.20 and 307,895.20

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Solution

The fourth proportional to 354,551.20, 531,049.20 and 307,895.20 is: 461,167.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,551.20 : 531,049.20 = 307,895.20 : x
  2. Step 2: Convert to fraction form
    354,551.20/531,049.20 = 307,895.20/x
  3. Step 3: Cross multiply
    354,551.20x = 531,049.20 × 307,895.20
  4. Step 4: Simplify right side
    354,551.20x = 163,507,499,643.84
  5. Step 5: Solve for x
    x = 163,507,499,643.84/354,551.20
  6. Step 6: Final answer
    x = 461,167.53

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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.