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Finding the Fourth Proportional to 318,624.93, 439,744.40 and 191,308.73

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Solution

The fourth proportional to 318,624.93, 439,744.40 and 191,308.73 is: 264,031.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,624.93 : 439,744.40 = 191,308.73 : x
  2. Step 2: Convert to fraction form
    318,624.93/439,744.40 = 191,308.73/x
  3. Step 3: Cross multiply
    318,624.93x = 439,744.40 × 191,308.73
  4. Step 4: Simplify right side
    318,624.93x = 84,126,942,688.61
  5. Step 5: Solve for x
    x = 84,126,942,688.61/318,624.93
  6. Step 6: Final answer
    x = 264,031.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.