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Finding the Fourth Proportional to 388,556.86, 536,224.95 and 216,474.67

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Solution

The fourth proportional to 388,556.86, 536,224.95 and 216,474.67 is: 298,744.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,556.86 : 536,224.95 = 216,474.67 : x
  2. Step 2: Convert to fraction form
    388,556.86/536,224.95 = 216,474.67/x
  3. Step 3: Cross multiply
    388,556.86x = 536,224.95 × 216,474.67
  4. Step 4: Simplify right side
    388,556.86x = 116,079,119,097.02
  5. Step 5: Solve for x
    x = 116,079,119,097.02/388,556.86
  6. Step 6: Final answer
    x = 298,744.23

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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.