Home / 289,034.70-433,552.05-78,672.30

Finding the Fourth Proportional to 289,034.70, 433,552.05 and 78,672.30

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Solution

The fourth proportional to 289,034.70, 433,552.05 and 78,672.30 is: 118,008.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,034.70 : 433,552.05 = 78,672.30 : x
  2. Step 2: Convert to fraction form
    289,034.70/433,552.05 = 78,672.30/x
  3. Step 3: Cross multiply
    289,034.70x = 433,552.05 × 78,672.30
  4. Step 4: Simplify right side
    289,034.70x = 34,108,536,943.22
  5. Step 5: Solve for x
    x = 34,108,536,943.22/289,034.70
  6. Step 6: Final answer
    x = 118,008.45

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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.