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Finding the Fourth Proportional to 418,040.40, 626,801.40 and 240,459.60

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Solution

The fourth proportional to 418,040.40, 626,801.40 and 240,459.60 is: 360,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,040.40 : 626,801.40 = 240,459.60 : x
  2. Step 2: Convert to fraction form
    418,040.40/626,801.40 = 240,459.60/x
  3. Step 3: Cross multiply
    418,040.40x = 626,801.40 × 240,459.60
  4. Step 4: Simplify right side
    418,040.40x = 150,720,413,923.44
  5. Step 5: Solve for x
    x = 150,720,413,923.44/418,040.40
  6. Step 6: Final answer
    x = 360,540.31

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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.