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Finding the Fourth Proportional to 313,630.59, 469,986.60 and 155,543.31

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Solution

The fourth proportional to 313,630.59, 469,986.60 and 155,543.31 is: 233,087.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,630.59 : 469,986.60 = 155,543.31 : x
  2. Step 2: Convert to fraction form
    313,630.59/469,986.60 = 155,543.31/x
  3. Step 3: Cross multiply
    313,630.59x = 469,986.60 × 155,543.31
  4. Step 4: Simplify right side
    313,630.59x = 73,103,271,419.65
  5. Step 5: Solve for x
    x = 73,103,271,419.65/313,630.59
  6. Step 6: Final answer
    x = 233,087.19

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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.