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Finding the Fourth Proportional to 171,707.40, 257,852.70 and 127,384.20

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Solution

The fourth proportional to 171,707.40, 257,852.70 and 127,384.20 is: 191,292.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,707.40 : 257,852.70 = 127,384.20 : x
  2. Step 2: Convert to fraction form
    171,707.40/257,852.70 = 127,384.20/x
  3. Step 3: Cross multiply
    171,707.40x = 257,852.70 × 127,384.20
  4. Step 4: Simplify right side
    171,707.40x = 32,846,359,907.34
  5. Step 5: Solve for x
    x = 32,846,359,907.34/171,707.40
  6. Step 6: Final answer
    x = 191,292.63

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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.