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Finding the Fourth Proportional to 640,833.12, 961,315.38 and 241,809.66

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Solution

The fourth proportional to 640,833.12, 961,315.38 and 241,809.66 is: 362,739.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,833.12 : 961,315.38 = 241,809.66 : x
  2. Step 2: Convert to fraction form
    640,833.12/961,315.38 = 241,809.66/x
  3. Step 3: Cross multiply
    640,833.12x = 961,315.38 × 241,809.66
  4. Step 4: Simplify right side
    640,833.12x = 232,455,345,190.57
  5. Step 5: Solve for x
    x = 232,455,345,190.57/640,833.12
  6. Step 6: Final answer
    x = 362,739.28

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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.