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Finding the Fourth Proportional to 289,514.98, 434,278.51 and 79,151.62

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Solution

The fourth proportional to 289,514.98, 434,278.51 and 79,151.62 is: 118,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,514.98 : 434,278.51 = 79,151.62 : x
  2. Step 2: Convert to fraction form
    289,514.98/434,278.51 = 79,151.62/x
  3. Step 3: Cross multiply
    289,514.98x = 434,278.51 × 79,151.62
  4. Step 4: Simplify right side
    289,514.98x = 34,373,847,597.69
  5. Step 5: Solve for x
    x = 34,373,847,597.69/289,514.98
  6. Step 6: Final answer
    x = 118,729.08

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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.