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Finding the Fourth Proportional to 380,685.79, 571,100.78 and 152,999.11

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Solution

The fourth proportional to 380,685.79, 571,100.78 and 152,999.11 is: 229,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,685.79 : 571,100.78 = 152,999.11 : x
  2. Step 2: Convert to fraction form
    380,685.79/571,100.78 = 152,999.11/x
  3. Step 3: Cross multiply
    380,685.79x = 571,100.78 × 152,999.11
  4. Step 4: Simplify right side
    380,685.79x = 87,377,911,060.31
  5. Step 5: Solve for x
    x = 87,377,911,060.31/380,685.79
  6. Step 6: Final answer
    x = 229,527.64

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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.