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Finding the Fourth Proportional to 171,008.48, 257,680 and 140,526.56

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Solution

The fourth proportional to 171,008.48, 257,680 and 140,526.56 is: 211,749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,008.48 : 257,680 = 140,526.56 : x
  2. Step 2: Convert to fraction form
    171,008.48/257,680 = 140,526.56/x
  3. Step 3: Cross multiply
    171,008.48x = 257,680 × 140,526.56
  4. Step 4: Simplify right side
    171,008.48x = 36,210,883,980.80
  5. Step 5: Solve for x
    x = 36,210,883,980.80/171,008.48
  6. Step 6: Final answer
    x = 211,749.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.