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Finding the Fourth Proportional to 383,691.20, 575,536.80 and 361,918.40

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Solution

The fourth proportional to 383,691.20, 575,536.80 and 361,918.40 is: 542,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,691.20 : 575,536.80 = 361,918.40 : x
  2. Step 2: Convert to fraction form
    383,691.20/575,536.80 = 361,918.40/x
  3. Step 3: Cross multiply
    383,691.20x = 575,536.80 × 361,918.40
  4. Step 4: Simplify right side
    383,691.20x = 208,297,357,797.12
  5. Step 5: Solve for x
    x = 208,297,357,797.12/383,691.20
  6. Step 6: Final answer
    x = 542,877.60

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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.