Home / 431,424.29-647,076.53-228,931.79

Finding the Fourth Proportional to 431,424.29, 647,076.53 and 228,931.79

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Solution

The fourth proportional to 431,424.29, 647,076.53 and 228,931.79 is: 343,365.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,424.29 : 647,076.53 = 228,931.79 : x
  2. Step 2: Convert to fraction form
    431,424.29/647,076.53 = 228,931.79/x
  3. Step 3: Cross multiply
    431,424.29x = 647,076.53 × 228,931.79
  4. Step 4: Simplify right side
    431,424.29x = 148,136,385,616.84
  5. Step 5: Solve for x
    x = 148,136,385,616.84/431,424.29
  6. Step 6: Final answer
    x = 343,365.89

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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.