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Finding the Fourth Proportional to 388,588.86, 536,253.75 and 225,277.20

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Solution

The fourth proportional to 388,588.86, 536,253.75 and 225,277.20 is: 310,883.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,588.86 : 536,253.75 = 225,277.20 : x
  2. Step 2: Convert to fraction form
    388,588.86/536,253.75 = 225,277.20/x
  3. Step 3: Cross multiply
    388,588.86x = 536,253.75 × 225,277.20
  4. Step 4: Simplify right side
    388,588.86x = 120,805,743,289.50
  5. Step 5: Solve for x
    x = 120,805,743,289.50/388,588.86
  6. Step 6: Final answer
    x = 310,883.19

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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.