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Finding the Fourth Proportional to 375,342.20, 518,009.48 and 214,221.66

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Solution

The fourth proportional to 375,342.20, 518,009.48 and 214,221.66 is: 295,647.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,342.20 : 518,009.48 = 214,221.66 : x
  2. Step 2: Convert to fraction form
    375,342.20/518,009.48 = 214,221.66/x
  3. Step 3: Cross multiply
    375,342.20x = 518,009.48 × 214,221.66
  4. Step 4: Simplify right side
    375,342.20x = 110,968,850,701.34
  5. Step 5: Solve for x
    x = 110,968,850,701.34/375,342.20
  6. Step 6: Final answer
    x = 295,647.15

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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.