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Finding the Fourth Proportional to 400,342.97, 552,450.18 and 219,058.45

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Solution

The fourth proportional to 400,342.97, 552,450.18 and 219,058.45 is: 302,288.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,342.97 : 552,450.18 = 219,058.45 : x
  2. Step 2: Convert to fraction form
    400,342.97/552,450.18 = 219,058.45/x
  3. Step 3: Cross multiply
    400,342.97x = 552,450.18 × 219,058.45
  4. Step 4: Simplify right side
    400,342.97x = 121,018,878,751.90
  5. Step 5: Solve for x
    x = 121,018,878,751.90/400,342.97
  6. Step 6: Final answer
    x = 302,288.01

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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.