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Finding the Fourth Proportional to 172,256.40, 257,801.40 and 151,261.20

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Solution

The fourth proportional to 172,256.40, 257,801.40 and 151,261.20 is: 226,379.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,256.40 : 257,801.40 = 151,261.20 : x
  2. Step 2: Convert to fraction form
    172,256.40/257,801.40 = 151,261.20/x
  3. Step 3: Cross multiply
    172,256.40x = 257,801.40 × 151,261.20
  4. Step 4: Simplify right side
    172,256.40x = 38,995,349,125.68
  5. Step 5: Solve for x
    x = 38,995,349,125.68/172,256.40
  6. Step 6: Final answer
    x = 226,379.68

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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.