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Finding the Fourth Proportional to 440,137.60, 660,206.40 and 124,590.40

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Solution

The fourth proportional to 440,137.60, 660,206.40 and 124,590.40 is: 186,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,137.60 : 660,206.40 = 124,590.40 : x
  2. Step 2: Convert to fraction form
    440,137.60/660,206.40 = 124,590.40/x
  3. Step 3: Cross multiply
    440,137.60x = 660,206.40 × 124,590.40
  4. Step 4: Simplify right side
    440,137.60x = 82,255,379,458.56
  5. Step 5: Solve for x
    x = 82,255,379,458.56/440,137.60
  6. Step 6: Final answer
    x = 186,885.60

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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.