Home / 311,302.42-429,618.26-173,502.78

Finding the Fourth Proportional to 311,302.42, 429,618.26 and 173,502.78

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Solution

The fourth proportional to 311,302.42, 429,618.26 and 173,502.78 is: 239,445.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,302.42 : 429,618.26 = 173,502.78 : x
  2. Step 2: Convert to fraction form
    311,302.42/429,618.26 = 173,502.78/x
  3. Step 3: Cross multiply
    311,302.42x = 429,618.26 × 173,502.78
  4. Step 4: Simplify right side
    311,302.42x = 74,539,962,448.76
  5. Step 5: Solve for x
    x = 74,539,962,448.76/311,302.42
  6. Step 6: Final answer
    x = 239,445.50

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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.