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Finding the Fourth Proportional to 666,641.22, 1,000,155.48 and 240,168.94

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Solution

The fourth proportional to 666,641.22, 1,000,155.48 and 240,168.94 is: 360,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,641.22 : 1,000,155.48 = 240,168.94 : x
  2. Step 2: Convert to fraction form
    666,641.22/1,000,155.48 = 240,168.94/x
  3. Step 3: Cross multiply
    666,641.22x = 1,000,155.48 × 240,168.94
  4. Step 4: Simplify right side
    666,641.22x = 240,206,281,466.79
  5. Step 5: Solve for x
    x = 240,206,281,466.79/666,641.22
  6. Step 6: Final answer
    x = 360,323.18

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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.