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Finding the Fourth Proportional to 388,451.76, 536,114.52 and 218,718.96

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Solution

The fourth proportional to 388,451.76, 536,114.52 and 218,718.96 is: 301,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,451.76 : 536,114.52 = 218,718.96 : x
  2. Step 2: Convert to fraction form
    388,451.76/536,114.52 = 218,718.96/x
  3. Step 3: Cross multiply
    388,451.76x = 536,114.52 × 218,718.96
  4. Step 4: Simplify right side
    388,451.76x = 117,258,410,255.30
  5. Step 5: Solve for x
    x = 117,258,410,255.30/388,451.76
  6. Step 6: Final answer
    x = 301,860.93

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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.