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Finding the Fourth Proportional to 476,659.28, 714,984.40 and 121,668.40

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Solution

The fourth proportional to 476,659.28, 714,984.40 and 121,668.40 is: 182,501.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,659.28 : 714,984.40 = 121,668.40 : x
  2. Step 2: Convert to fraction form
    476,659.28/714,984.40 = 121,668.40/x
  3. Step 3: Cross multiply
    476,659.28x = 714,984.40 × 121,668.40
  4. Step 4: Simplify right side
    476,659.28x = 86,991,007,972.96
  5. Step 5: Solve for x
    x = 86,991,007,972.96/476,659.28
  6. Step 6: Final answer
    x = 182,501.45

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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.