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Finding the Fourth Proportional to 438,856.20, 605,205.54 and 302,672.52

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Solution

The fourth proportional to 438,856.20, 605,205.54 and 302,672.52 is: 417,401.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,856.20 : 605,205.54 = 302,672.52 : x
  2. Step 2: Convert to fraction form
    438,856.20/605,205.54 = 302,672.52/x
  3. Step 3: Cross multiply
    438,856.20x = 605,205.54 × 302,672.52
  4. Step 4: Simplify right side
    438,856.20x = 183,179,085,909.76
  5. Step 5: Solve for x
    x = 183,179,085,909.76/438,856.20
  6. Step 6: Final answer
    x = 417,401.16

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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.