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Finding the Fourth Proportional to 345,921.60, 518,007.60 and 275,937.60

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Solution

The fourth proportional to 345,921.60, 518,007.60 and 275,937.60 is: 413,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,921.60 : 518,007.60 = 275,937.60 : x
  2. Step 2: Convert to fraction form
    345,921.60/518,007.60 = 275,937.60/x
  3. Step 3: Cross multiply
    345,921.60x = 518,007.60 × 275,937.60
  4. Step 4: Simplify right side
    345,921.60x = 142,937,773,925.76
  5. Step 5: Solve for x
    x = 142,937,773,925.76/345,921.60
  6. Step 6: Final answer
    x = 413,208.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.