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Finding the Fourth Proportional to 388,433.54, 536,039.16 and 216,350.12

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Solution

The fourth proportional to 388,433.54, 536,039.16 and 216,350.12 is: 298,563.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,433.54 : 536,039.16 = 216,350.12 : x
  2. Step 2: Convert to fraction form
    388,433.54/536,039.16 = 216,350.12/x
  3. Step 3: Cross multiply
    388,433.54x = 536,039.16 × 216,350.12
  4. Step 4: Simplify right side
    388,433.54x = 115,972,136,590.70
  5. Step 5: Solve for x
    x = 115,972,136,590.70/388,433.54
  6. Step 6: Final answer
    x = 298,563.65

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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.