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Finding the Fourth Proportional to 440,762.22, 661,106.57 and 312,146.78

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Solution

The fourth proportional to 440,762.22, 661,106.57 and 312,146.78 is: 468,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,762.22 : 661,106.57 = 312,146.78 : x
  2. Step 2: Convert to fraction form
    440,762.22/661,106.57 = 312,146.78/x
  3. Step 3: Cross multiply
    440,762.22x = 661,106.57 × 312,146.78
  4. Step 4: Simplify right side
    440,762.22x = 206,362,282,196.08
  5. Step 5: Solve for x
    x = 206,362,282,196.08/440,762.22
  6. Step 6: Final answer
    x = 468,194.13

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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.