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Finding the Fourth Proportional to 390,275.88, 536,513.13 and 335,627.88

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Solution

The fourth proportional to 390,275.88, 536,513.13 and 335,627.88 is: 461,388.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,275.88 : 536,513.13 = 335,627.88 : x
  2. Step 2: Convert to fraction form
    390,275.88/536,513.13 = 335,627.88/x
  3. Step 3: Cross multiply
    390,275.88x = 536,513.13 × 335,627.88
  4. Step 4: Simplify right side
    390,275.88x = 180,068,764,414.06
  5. Step 5: Solve for x
    x = 180,068,764,414.06/390,275.88
  6. Step 6: Final answer
    x = 461,388.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.