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Finding the Fourth Proportional to 212,392.71, 318,632.81 and 177,575.67

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Solution

The fourth proportional to 212,392.71, 318,632.81 and 177,575.67 is: 266,400.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,392.71 : 318,632.81 = 177,575.67 : x
  2. Step 2: Convert to fraction form
    212,392.71/318,632.81 = 177,575.67/x
  3. Step 3: Cross multiply
    212,392.71x = 318,632.81 × 177,575.67
  4. Step 4: Simplify right side
    212,392.71x = 56,581,433,831.85
  5. Step 5: Solve for x
    x = 56,581,433,831.85/212,392.71
  6. Step 6: Final answer
    x = 266,400.07

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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.