Home / 421,623.38-631,421.69-241,161.71

Finding the Fourth Proportional to 421,623.38, 631,421.69 and 241,161.71

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Solution

The fourth proportional to 421,623.38, 631,421.69 and 241,161.71 is: 361,162.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,623.38 : 631,421.69 = 241,161.71 : x
  2. Step 2: Convert to fraction form
    421,623.38/631,421.69 = 241,161.71/x
  3. Step 3: Cross multiply
    421,623.38x = 631,421.69 × 241,161.71
  4. Step 4: Simplify right side
    421,623.38x = 152,274,734,491.49
  5. Step 5: Solve for x
    x = 152,274,734,491.49/421,623.38
  6. Step 6: Final answer
    x = 361,162.93

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1.5x scale

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.