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Finding the Fourth Proportional to 288,069.90, 431,860.85 and 119,485.01

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Solution

The fourth proportional to 288,069.90, 431,860.85 and 119,485.01 is: 179,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,069.90 : 431,860.85 = 119,485.01 : x
  2. Step 2: Convert to fraction form
    288,069.90/431,860.85 = 119,485.01/x
  3. Step 3: Cross multiply
    288,069.90x = 431,860.85 × 119,485.01
  4. Step 4: Simplify right side
    288,069.90x = 51,600,896,120.27
  5. Step 5: Solve for x
    x = 51,600,896,120.27/288,069.90
  6. Step 6: Final answer
    x = 179,126.30

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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.