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Finding the Fourth Proportional to 395,999.20, 592,832.40 and 372,930.40

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Solution

The fourth proportional to 395,999.20, 592,832.40 and 372,930.40 is: 558,297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,999.20 : 592,832.40 = 372,930.40 : x
  2. Step 2: Convert to fraction form
    395,999.20/592,832.40 = 372,930.40/x
  3. Step 3: Cross multiply
    395,999.20x = 592,832.40 × 372,930.40
  4. Step 4: Simplify right side
    395,999.20x = 221,085,224,064.96
  5. Step 5: Solve for x
    x = 221,085,224,064.96/395,999.20
  6. Step 6: Final answer
    x = 558,297.15

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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.