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Finding the Fourth Proportional to 440,317.20, 660,038.40 and 203,246.40

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Solution

The fourth proportional to 440,317.20, 660,038.40 and 203,246.40 is: 304,667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,317.20 : 660,038.40 = 203,246.40 : x
  2. Step 2: Convert to fraction form
    440,317.20/660,038.40 = 203,246.40/x
  3. Step 3: Cross multiply
    440,317.20x = 660,038.40 × 203,246.40
  4. Step 4: Simplify right side
    440,317.20x = 134,150,428,661.76
  5. Step 5: Solve for x
    x = 134,150,428,661.76/440,317.20
  6. Step 6: Final answer
    x = 304,667.70

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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.