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Finding the Fourth Proportional to 307,492.74, 424,339.29 and 173,355.78

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Solution

The fourth proportional to 307,492.74, 424,339.29 and 173,355.78 is: 239,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,492.74 : 424,339.29 = 173,355.78 : x
  2. Step 2: Convert to fraction form
    307,492.74/424,339.29 = 173,355.78/x
  3. Step 3: Cross multiply
    307,492.74x = 424,339.29 × 173,355.78
  4. Step 4: Simplify right side
    307,492.74x = 73,561,668,602.60
  5. Step 5: Solve for x
    x = 73,561,668,602.60/307,492.74
  6. Step 6: Final answer
    x = 239,230.59

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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.