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Finding the Fourth Proportional to 359,780.78, 539,556.35 and 146,548.28

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Solution

The fourth proportional to 359,780.78, 539,556.35 and 146,548.28 is: 219,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,780.78 : 539,556.35 = 146,548.28 : x
  2. Step 2: Convert to fraction form
    359,780.78/539,556.35 = 146,548.28/x
  3. Step 3: Cross multiply
    359,780.78x = 539,556.35 × 146,548.28
  4. Step 4: Simplify right side
    359,780.78x = 79,071,056,770.84
  5. Step 5: Solve for x
    x = 79,071,056,770.84/359,780.78
  6. Step 6: Final answer
    x = 219,775.65

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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.