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Finding the Fourth Proportional to 388,283.43, 535,726.51 and 227,178.07

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Solution

The fourth proportional to 388,283.43, 535,726.51 and 227,178.07 is: 313,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,283.43 : 535,726.51 = 227,178.07 : x
  2. Step 2: Convert to fraction form
    388,283.43/535,726.51 = 227,178.07/x
  3. Step 3: Cross multiply
    388,283.43x = 535,726.51 × 227,178.07
  4. Step 4: Simplify right side
    388,283.43x = 121,705,314,589.64
  5. Step 5: Solve for x
    x = 121,705,314,589.64/388,283.43
  6. Step 6: Final answer
    x = 313,444.52

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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.