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Finding the Fourth Proportional to 290,688.80, 436,090.80 and 244,263.20

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Solution

The fourth proportional to 290,688.80, 436,090.80 and 244,263.20 is: 366,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,688.80 : 436,090.80 = 244,263.20 : x
  2. Step 2: Convert to fraction form
    290,688.80/436,090.80 = 244,263.20/x
  3. Step 3: Cross multiply
    290,688.80x = 436,090.80 × 244,263.20
  4. Step 4: Simplify right side
    290,688.80x = 106,520,934,298.56
  5. Step 5: Solve for x
    x = 106,520,934,298.56/290,688.80
  6. Step 6: Final answer
    x = 366,443.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.