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Finding the Fourth Proportional to 399,510.75, 551,341.05 and 229,744.89

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Solution

The fourth proportional to 399,510.75, 551,341.05 and 229,744.89 is: 317,057.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,510.75 : 551,341.05 = 229,744.89 : x
  2. Step 2: Convert to fraction form
    399,510.75/551,341.05 = 229,744.89/x
  3. Step 3: Cross multiply
    399,510.75x = 551,341.05 × 229,744.89
  4. Step 4: Simplify right side
    399,510.75x = 126,667,788,884.74
  5. Step 5: Solve for x
    x = 126,667,788,884.74/399,510.75
  6. Step 6: Final answer
    x = 317,057.27

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1.5x scale

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.