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Finding the Fourth Proportional to 388,759.05, 536,492.85 and 216,672.21

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Solution

The fourth proportional to 388,759.05, 536,492.85 and 216,672.21 is: 299,010.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,759.05 : 536,492.85 = 216,672.21 : x
  2. Step 2: Convert to fraction form
    388,759.05/536,492.85 = 216,672.21/x
  3. Step 3: Cross multiply
    388,759.05x = 536,492.85 × 216,672.21
  4. Step 4: Simplify right side
    388,759.05x = 116,243,091,458.70
  5. Step 5: Solve for x
    x = 116,243,091,458.70/388,759.05
  6. Step 6: Final answer
    x = 299,010.64

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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.