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Finding the Fourth Proportional to 359,511.40, 539,007.90 and 201,788.20

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Solution

The fourth proportional to 359,511.40, 539,007.90 and 201,788.20 is: 302,536.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,511.40 : 539,007.90 = 201,788.20 : x
  2. Step 2: Convert to fraction form
    359,511.40/539,007.90 = 201,788.20/x
  3. Step 3: Cross multiply
    359,511.40x = 539,007.90 × 201,788.20
  4. Step 4: Simplify right side
    359,511.40x = 108,765,433,926.78
  5. Step 5: Solve for x
    x = 108,765,433,926.78/359,511.40
  6. Step 6: Final answer
    x = 302,536.82

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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.