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Finding the Fourth Proportional to 388,426.96, 536,020.95 and 216,344.39

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Solution

The fourth proportional to 388,426.96, 536,020.95 and 216,344.39 is: 298,550.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,426.96 : 536,020.95 = 216,344.39 : x
  2. Step 2: Convert to fraction form
    388,426.96/536,020.95 = 216,344.39/x
  3. Step 3: Cross multiply
    388,426.96x = 536,020.95 × 216,344.39
  4. Step 4: Simplify right side
    388,426.96x = 115,965,125,454.97
  5. Step 5: Solve for x
    x = 115,965,125,454.97/388,426.96
  6. Step 6: Final answer
    x = 298,550.66

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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.