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Finding the Fourth Proportional to 310,258.77, 428,156.87 and 176,122.77

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Solution

The fourth proportional to 310,258.77, 428,156.87 and 176,122.77 is: 243,049.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,258.77 : 428,156.87 = 176,122.77 : x
  2. Step 2: Convert to fraction form
    310,258.77/428,156.87 = 176,122.77/x
  3. Step 3: Cross multiply
    310,258.77x = 428,156.87 × 176,122.77
  4. Step 4: Simplify right side
    310,258.77x = 75,408,173,058.32
  5. Step 5: Solve for x
    x = 75,408,173,058.32/310,258.77
  6. Step 6: Final answer
    x = 243,049.29

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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.