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Finding the Fourth Proportional to 438,812.20, 658,218.30 and 367,953.40

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Solution

The fourth proportional to 438,812.20, 658,218.30 and 367,953.40 is: 551,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,812.20 : 658,218.30 = 367,953.40 : x
  2. Step 2: Convert to fraction form
    438,812.20/658,218.30 = 367,953.40/x
  3. Step 3: Cross multiply
    438,812.20x = 658,218.30 × 367,953.40
  4. Step 4: Simplify right side
    438,812.20x = 242,193,661,427.22
  5. Step 5: Solve for x
    x = 242,193,661,427.22/438,812.20
  6. Step 6: Final answer
    x = 551,930.10

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1.5x scale

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.