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Finding the Fourth Proportional to 407,844.40, 611,766.60 and 239,445.40

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Solution

The fourth proportional to 407,844.40, 611,766.60 and 239,445.40 is: 359,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,844.40 : 611,766.60 = 239,445.40 : x
  2. Step 2: Convert to fraction form
    407,844.40/611,766.60 = 239,445.40/x
  3. Step 3: Cross multiply
    407,844.40x = 611,766.60 × 239,445.40
  4. Step 4: Simplify right side
    407,844.40x = 146,484,698,243.64
  5. Step 5: Solve for x
    x = 146,484,698,243.64/407,844.40
  6. Step 6: Final answer
    x = 359,168.10

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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.