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Finding the Fourth Proportional to 388,606.86, 536,278.68 and 225,295.20

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Solution

The fourth proportional to 388,606.86, 536,278.68 and 225,295.20 is: 310,908.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,606.86 : 536,278.68 = 225,295.20 : x
  2. Step 2: Convert to fraction form
    388,606.86/536,278.68 = 225,295.20/x
  3. Step 3: Cross multiply
    388,606.86x = 536,278.68 × 225,295.20
  4. Step 4: Simplify right side
    388,606.86x = 120,821,012,466.34
  5. Step 5: Solve for x
    x = 120,821,012,466.34/388,606.86
  6. Step 6: Final answer
    x = 310,908.08

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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.