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Finding the Fourth Proportional to 387,203.44, 534,109.20 and 243,714.40

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Solution

The fourth proportional to 387,203.44, 534,109.20 and 243,714.40 is: 336,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,203.44 : 534,109.20 = 243,714.40 : x
  2. Step 2: Convert to fraction form
    387,203.44/534,109.20 = 243,714.40/x
  3. Step 3: Cross multiply
    387,203.44x = 534,109.20 × 243,714.40
  4. Step 4: Simplify right side
    387,203.44x = 130,170,103,212.48
  5. Step 5: Solve for x
    x = 130,170,103,212.48/387,203.44
  6. Step 6: Final answer
    x = 336,180.13

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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.