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Finding the Fourth Proportional to 388,554.68, 582,864.80 and 108,071.93

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Solution

The fourth proportional to 388,554.68, 582,864.80 and 108,071.93 is: 162,117.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,554.68 : 582,864.80 = 108,071.93 : x
  2. Step 2: Convert to fraction form
    388,554.68/582,864.80 = 108,071.93/x
  3. Step 3: Cross multiply
    388,554.68x = 582,864.80 × 108,071.93
  4. Step 4: Simplify right side
    388,554.68x = 62,991,321,220.92
  5. Step 5: Solve for x
    x = 62,991,321,220.92/388,554.68
  6. Step 6: Final answer
    x = 162,117.01

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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.