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Finding the Fourth Proportional to 421,483.20, 581,617.20 and 230,492.52

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Solution

The fourth proportional to 421,483.20, 581,617.20 and 230,492.52 is: 318,063.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,483.20 : 581,617.20 = 230,492.52 : x
  2. Step 2: Convert to fraction form
    421,483.20/581,617.20 = 230,492.52/x
  3. Step 3: Cross multiply
    421,483.20x = 581,617.20 × 230,492.52
  4. Step 4: Simplify right side
    421,483.20x = 134,058,414,103.34
  5. Step 5: Solve for x
    x = 134,058,414,103.34/421,483.20
  6. Step 6: Final answer
    x = 318,063.48

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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.