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Finding the Fourth Proportional to 145,174.76, 217,334.30 and 141,597.80

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Solution

The fourth proportional to 145,174.76, 217,334.30 and 141,597.80 is: 211,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,174.76 : 217,334.30 = 141,597.80 : x
  2. Step 2: Convert to fraction form
    145,174.76/217,334.30 = 141,597.80/x
  3. Step 3: Cross multiply
    145,174.76x = 217,334.30 × 141,597.80
  4. Step 4: Simplify right side
    145,174.76x = 30,774,058,744.54
  5. Step 5: Solve for x
    x = 30,774,058,744.54/145,174.76
  6. Step 6: Final answer
    x = 211,979.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.