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Finding the Fourth Proportional to 171,000.70, 256,501.05 and 147,672.70

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Solution

The fourth proportional to 171,000.70, 256,501.05 and 147,672.70 is: 221,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,000.70 : 256,501.05 = 147,672.70 : x
  2. Step 2: Convert to fraction form
    171,000.70/256,501.05 = 147,672.70/x
  3. Step 3: Cross multiply
    171,000.70x = 256,501.05 × 147,672.70
  4. Step 4: Simplify right side
    171,000.70x = 37,878,202,606.34
  5. Step 5: Solve for x
    x = 37,878,202,606.34/171,000.70
  6. Step 6: Final answer
    x = 221,509.05

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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.