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Finding the Fourth Proportional to 359,257.80, 538,886.70 and 303,961.80

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Solution

The fourth proportional to 359,257.80, 538,886.70 and 303,961.80 is: 455,942.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,257.80 : 538,886.70 = 303,961.80 : x
  2. Step 2: Convert to fraction form
    359,257.80/538,886.70 = 303,961.80/x
  3. Step 3: Cross multiply
    359,257.80x = 538,886.70 × 303,961.80
  4. Step 4: Simplify right side
    359,257.80x = 163,800,971,328.06
  5. Step 5: Solve for x
    x = 163,800,971,328.06/359,257.80
  6. Step 6: Final answer
    x = 455,942.70

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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.