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Finding the Fourth Proportional to 388,765.86, 536,499.38 and 216,694.73

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Solution

The fourth proportional to 388,765.86, 536,499.38 and 216,694.73 is: 299,040.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,765.86 : 536,499.38 = 216,694.73 : x
  2. Step 2: Convert to fraction form
    388,765.86/536,499.38 = 216,694.73/x
  3. Step 3: Cross multiply
    388,765.86x = 536,499.38 × 216,694.73
  4. Step 4: Simplify right side
    388,765.86x = 116,256,590,362.19
  5. Step 5: Solve for x
    x = 116,256,590,362.19/388,765.86
  6. Step 6: Final answer
    x = 299,040.12

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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.