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Finding the Fourth Proportional to 270,392.48, 405,612.36 and 70,712.08

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Solution

The fourth proportional to 270,392.48, 405,612.36 and 70,712.08 is: 106,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,392.48 : 405,612.36 = 70,712.08 : x
  2. Step 2: Convert to fraction form
    270,392.48/405,612.36 = 70,712.08/x
  3. Step 3: Cross multiply
    270,392.48x = 405,612.36 × 70,712.08
  4. Step 4: Simplify right side
    270,392.48x = 28,681,693,649.31
  5. Step 5: Solve for x
    x = 28,681,693,649.31/270,392.48
  6. Step 6: Final answer
    x = 106,074.30

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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.