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Finding the Fourth Proportional to 239,058.78, 356,839.11 and 210,684.12

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Solution

The fourth proportional to 239,058.78, 356,839.11 and 210,684.12 is: 314,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,058.78 : 356,839.11 = 210,684.12 : x
  2. Step 2: Convert to fraction form
    239,058.78/356,839.11 = 210,684.12/x
  3. Step 3: Cross multiply
    239,058.78x = 356,839.11 × 210,684.12
  4. Step 4: Simplify right side
    239,058.78x = 75,180,333,871.93
  5. Step 5: Solve for x
    x = 75,180,333,871.93/239,058.78
  6. Step 6: Final answer
    x = 314,484.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.