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Finding the Fourth Proportional to 421,559.80, 581,767.50 and 240,299.08

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Solution

The fourth proportional to 421,559.80, 581,767.50 and 240,299.08 is: 331,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,559.80 : 581,767.50 = 240,299.08 : x
  2. Step 2: Convert to fraction form
    421,559.80/581,767.50 = 240,299.08/x
  3. Step 3: Cross multiply
    421,559.80x = 581,767.50 × 240,299.08
  4. Step 4: Simplify right side
    421,559.80x = 139,798,195,023.90
  5. Step 5: Solve for x
    x = 139,798,195,023.90/421,559.80
  6. Step 6: Final answer
    x = 331,621.27

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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.