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Finding the Fourth Proportional to 418,940.64, 577,735.88 and 281,430.59

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Solution

The fourth proportional to 418,940.64, 577,735.88 and 281,430.59 is: 388,104.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,940.64 : 577,735.88 = 281,430.59 : x
  2. Step 2: Convert to fraction form
    418,940.64/577,735.88 = 281,430.59/x
  3. Step 3: Cross multiply
    418,940.64x = 577,735.88 × 281,430.59
  4. Step 4: Simplify right side
    418,940.64x = 162,592,545,276.74
  5. Step 5: Solve for x
    x = 162,592,545,276.74/418,940.64
  6. Step 6: Final answer
    x = 388,104.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.