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Finding the Fourth Proportional to 288,560.47, 432,840.81 and 75,327.79

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Solution

The fourth proportional to 288,560.47, 432,840.81 and 75,327.79 is: 112,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,560.47 : 432,840.81 = 75,327.79 : x
  2. Step 2: Convert to fraction form
    288,560.47/432,840.81 = 75,327.79/x
  3. Step 3: Cross multiply
    288,560.47x = 432,840.81 × 75,327.79
  4. Step 4: Simplify right side
    288,560.47x = 32,604,939,474.91
  5. Step 5: Solve for x
    x = 32,604,939,474.91/288,560.47
  6. Step 6: Final answer
    x = 112,991.71

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1.5x scale

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.