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Finding the Fourth Proportional to 640,431.72, 960,536.31 and 241,075.62

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Solution

The fourth proportional to 640,431.72, 960,536.31 and 241,075.62 is: 361,571.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,431.72 : 960,536.31 = 241,075.62 : x
  2. Step 2: Convert to fraction form
    640,431.72/960,536.31 = 241,075.62/x
  3. Step 3: Cross multiply
    640,431.72x = 960,536.31 × 241,075.62
  4. Step 4: Simplify right side
    640,431.72x = 231,561,886,465.76
  5. Step 5: Solve for x
    x = 231,561,886,465.76/640,431.72
  6. Step 6: Final answer
    x = 361,571.54

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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.