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Finding the Fourth Proportional to 388,550.91, 582,859.17 and 108,068.16

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Solution

The fourth proportional to 388,550.91, 582,859.17 and 108,068.16 is: 162,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,550.91 : 582,859.17 = 108,068.16 : x
  2. Step 2: Convert to fraction form
    388,550.91/582,859.17 = 108,068.16/x
  3. Step 3: Cross multiply
    388,550.91x = 582,859.17 × 108,068.16
  4. Step 4: Simplify right side
    388,550.91x = 62,988,518,041.03
  5. Step 5: Solve for x
    x = 62,988,518,041.03/388,550.91
  6. Step 6: Final answer
    x = 162,111.36

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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.