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Finding the Fourth Proportional to 359,172.80, 538,528.80 and 148,894.40

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Solution

The fourth proportional to 359,172.80, 538,528.80 and 148,894.40 is: 223,246.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,172.80 : 538,528.80 = 148,894.40 : x
  2. Step 2: Convert to fraction form
    359,172.80/538,528.80 = 148,894.40/x
  3. Step 3: Cross multiply
    359,172.80x = 538,528.80 × 148,894.40
  4. Step 4: Simplify right side
    359,172.80x = 80,183,922,558.72
  5. Step 5: Solve for x
    x = 80,183,922,558.72/359,172.80
  6. Step 6: Final answer
    x = 223,246.09

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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.