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Finding the Fourth Proportional to 368,334.28, 508,306.50 and 217,431.24

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Solution

The fourth proportional to 368,334.28, 508,306.50 and 217,431.24 is: 300,058.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,334.28 : 508,306.50 = 217,431.24 : x
  2. Step 2: Convert to fraction form
    368,334.28/508,306.50 = 217,431.24/x
  3. Step 3: Cross multiply
    368,334.28x = 508,306.50 × 217,431.24
  4. Step 4: Simplify right side
    368,334.28x = 110,521,712,595.06
  5. Step 5: Solve for x
    x = 110,521,712,595.06/368,334.28
  6. Step 6: Final answer
    x = 300,058.18

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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.