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Finding the Fourth Proportional to 388,456.02, 536,079.34 and 218,696.22

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Solution

The fourth proportional to 388,456.02, 536,079.34 and 218,696.22 is: 301,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,456.02 : 536,079.34 = 218,696.22 : x
  2. Step 2: Convert to fraction form
    388,456.02/536,079.34 = 218,696.22/x
  3. Step 3: Cross multiply
    388,456.02x = 536,079.34 × 218,696.22
  4. Step 4: Simplify right side
    388,456.02x = 117,238,525,278.10
  5. Step 5: Solve for x
    x = 117,238,525,278.10/388,456.02
  6. Step 6: Final answer
    x = 301,806.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.