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Finding the Fourth Proportional to 387,353.91, 534,460.81 and 234,388.25

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Solution

The fourth proportional to 387,353.91, 534,460.81 and 234,388.25 is: 323,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,353.91 : 534,460.81 = 234,388.25 : x
  2. Step 2: Convert to fraction form
    387,353.91/534,460.81 = 234,388.25/x
  3. Step 3: Cross multiply
    387,353.91x = 534,460.81 × 234,388.25
  4. Step 4: Simplify right side
    387,353.91x = 125,271,333,949.48
  5. Step 5: Solve for x
    x = 125,271,333,949.48/387,353.91
  6. Step 6: Final answer
    x = 323,402.79

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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.