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Finding the Fourth Proportional to 388,452.76, 536,115.90 and 218,719.96

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Solution

The fourth proportional to 388,452.76, 536,115.90 and 218,719.96 is: 301,862.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,452.76 : 536,115.90 = 218,719.96 : x
  2. Step 2: Convert to fraction form
    388,452.76/536,115.90 = 218,719.96/x
  3. Step 3: Cross multiply
    388,452.76x = 536,115.90 × 218,719.96
  4. Step 4: Simplify right side
    388,452.76x = 117,259,248,203.36
  5. Step 5: Solve for x
    x = 117,259,248,203.36/388,452.76
  6. Step 6: Final answer
    x = 301,862.31

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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.