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Finding the Fourth Proportional to 536,380.48, 740,338.08 and 309,993.28

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Solution

The fourth proportional to 536,380.48, 740,338.08 and 309,993.28 is: 427,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,380.48 : 740,338.08 = 309,993.28 : x
  2. Step 2: Convert to fraction form
    536,380.48/740,338.08 = 309,993.28/x
  3. Step 3: Cross multiply
    536,380.48x = 740,338.08 × 309,993.28
  4. Step 4: Simplify right side
    536,380.48x = 229,499,829,728.10
  5. Step 5: Solve for x
    x = 229,499,829,728.10/536,380.48
  6. Step 6: Final answer
    x = 427,867.60

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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.