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Finding the Fourth Proportional to 383,447.34, 528,812.01 and 240,219.90

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Solution

The fourth proportional to 383,447.34, 528,812.01 and 240,219.90 is: 331,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,447.34 : 528,812.01 = 240,219.90 : x
  2. Step 2: Convert to fraction form
    383,447.34/528,812.01 = 240,219.90/x
  3. Step 3: Cross multiply
    383,447.34x = 528,812.01 × 240,219.90
  4. Step 4: Simplify right side
    383,447.34x = 127,031,168,161.00
  5. Step 5: Solve for x
    x = 127,031,168,161.00/383,447.34
  6. Step 6: Final answer
    x = 331,287.13

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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.