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Finding the Fourth Proportional to 388,703.12, 536,227.03 and 227,459.26

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Solution

The fourth proportional to 388,703.12, 536,227.03 and 227,459.26 is: 313,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,703.12 : 536,227.03 = 227,459.26 : x
  2. Step 2: Convert to fraction form
    388,703.12/536,227.03 = 227,459.26/x
  3. Step 3: Cross multiply
    388,703.12x = 536,227.03 × 227,459.26
  4. Step 4: Simplify right side
    388,703.12x = 121,969,803,435.80
  5. Step 5: Solve for x
    x = 121,969,803,435.80/388,703.12
  6. Step 6: Final answer
    x = 313,786.53

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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.