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Finding the Fourth Proportional to 388,256.66, 535,711.52 and 227,080.23

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Solution

The fourth proportional to 388,256.66, 535,711.52 and 227,080.23 is: 313,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,256.66 : 535,711.52 = 227,080.23 : x
  2. Step 2: Convert to fraction form
    388,256.66/535,711.52 = 227,080.23/x
  3. Step 3: Cross multiply
    388,256.66x = 535,711.52 × 227,080.23
  4. Step 4: Simplify right side
    388,256.66x = 121,649,493,734.03
  5. Step 5: Solve for x
    x = 121,649,493,734.03/388,256.66
  6. Step 6: Final answer
    x = 313,322.36

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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.