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Finding the Fourth Proportional to 359,392.79, 538,556.65 and 145,901.05

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Solution

The fourth proportional to 359,392.79, 538,556.65 and 145,901.05 is: 218,635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,392.79 : 538,556.65 = 145,901.05 : x
  2. Step 2: Convert to fraction form
    359,392.79/538,556.65 = 145,901.05/x
  3. Step 3: Cross multiply
    359,392.79x = 538,556.65 × 145,901.05
  4. Step 4: Simplify right side
    359,392.79x = 78,575,980,719.48
  5. Step 5: Solve for x
    x = 78,575,980,719.48/359,392.79
  6. Step 6: Final answer
    x = 218,635.38

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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.