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Finding the Fourth Proportional to 419,775.91, 579,302.90 and 228,801.67

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Solution

The fourth proportional to 419,775.91, 579,302.90 and 228,801.67 is: 315,752.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,775.91 : 579,302.90 = 228,801.67 : x
  2. Step 2: Convert to fraction form
    419,775.91/579,302.90 = 228,801.67/x
  3. Step 3: Cross multiply
    419,775.91x = 579,302.90 × 228,801.67
  4. Step 4: Simplify right side
    419,775.91x = 132,545,470,955.84
  5. Step 5: Solve for x
    x = 132,545,470,955.84/419,775.91
  6. Step 6: Final answer
    x = 315,752.92

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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.