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Finding the Fourth Proportional to 490,155.68, 734,831.76 and 174,432.80

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Solution

The fourth proportional to 490,155.68, 734,831.76 and 174,432.80 is: 261,506.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,155.68 : 734,831.76 = 174,432.80 : x
  2. Step 2: Convert to fraction form
    490,155.68/734,831.76 = 174,432.80/x
  3. Step 3: Cross multiply
    490,155.68x = 734,831.76 × 174,432.80
  4. Step 4: Simplify right side
    490,155.68x = 128,178,761,425.73
  5. Step 5: Solve for x
    x = 128,178,761,425.73/490,155.68
  6. Step 6: Final answer
    x = 261,506.22

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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.