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Finding the Fourth Proportional to 342,289.74, 472,355.79 and 189,315.92

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Solution

The fourth proportional to 342,289.74, 472,355.79 and 189,315.92 is: 261,253.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,289.74 : 472,355.79 = 189,315.92 : x
  2. Step 2: Convert to fraction form
    342,289.74/472,355.79 = 189,315.92/x
  3. Step 3: Cross multiply
    342,289.74x = 472,355.79 × 189,315.92
  4. Step 4: Simplify right side
    342,289.74x = 89,424,470,951.18
  5. Step 5: Solve for x
    x = 89,424,470,951.18/342,289.74
  6. Step 6: Final answer
    x = 261,253.73

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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.