Home / 289,876.28-434,815.70-79,516.60

Finding the Fourth Proportional to 289,876.28, 434,815.70 and 79,516.60

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Solution

The fourth proportional to 289,876.28, 434,815.70 and 79,516.60 is: 119,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,876.28 : 434,815.70 = 79,516.60 : x
  2. Step 2: Convert to fraction form
    289,876.28/434,815.70 = 79,516.60/x
  3. Step 3: Cross multiply
    289,876.28x = 434,815.70 × 79,516.60
  4. Step 4: Simplify right side
    289,876.28x = 34,575,066,090.62
  5. Step 5: Solve for x
    x = 34,575,066,090.62/289,876.28
  6. Step 6: Final answer
    x = 119,275.25

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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.