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Finding the Fourth Proportional to 388,710, 582,124.59 and 188,534.70

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Solution

The fourth proportional to 388,710, 582,124.59 and 188,534.70 is: 282,345.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,710 : 582,124.59 = 188,534.70 : x
  2. Step 2: Convert to fraction form
    388,710/582,124.59 = 188,534.70/x
  3. Step 3: Cross multiply
    388,710x = 582,124.59 × 188,534.70
  4. Step 4: Simplify right side
    388,710x = 109,750,684,938.27
  5. Step 5: Solve for x
    x = 109,750,684,938.27/388,710
  6. Step 6: Final answer
    x = 282,345.93

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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.