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Finding the Fourth Proportional to 388,682.64, 582,555.96 and 178,030.80

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Solution

The fourth proportional to 388,682.64, 582,555.96 and 178,030.80 is: 266,831.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,682.64 : 582,555.96 = 178,030.80 : x
  2. Step 2: Convert to fraction form
    388,682.64/582,555.96 = 178,030.80/x
  3. Step 3: Cross multiply
    388,682.64x = 582,555.96 × 178,030.80
  4. Step 4: Simplify right side
    388,682.64x = 103,712,903,603.57
  5. Step 5: Solve for x
    x = 103,712,903,603.57/388,682.64
  6. Step 6: Final answer
    x = 266,831.84

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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.