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Finding the Fourth Proportional to 226,645.64, 312,646.69 and 140,574.89

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Solution

The fourth proportional to 226,645.64, 312,646.69 and 140,574.89 is: 193,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,645.64 : 312,646.69 = 140,574.89 : x
  2. Step 2: Convert to fraction form
    226,645.64/312,646.69 = 140,574.89/x
  3. Step 3: Cross multiply
    226,645.64x = 312,646.69 × 140,574.89
  4. Step 4: Simplify right side
    226,645.64x = 43,950,274,222.22
  5. Step 5: Solve for x
    x = 43,950,274,222.22/226,645.64
  6. Step 6: Final answer
    x = 193,916.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.