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Finding the Fourth Proportional to 172,266.40, 257,816.40 and 151,271.20

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Solution

The fourth proportional to 172,266.40, 257,816.40 and 151,271.20 is: 226,394.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,266.40 : 257,816.40 = 151,271.20 : x
  2. Step 2: Convert to fraction form
    172,266.40/257,816.40 = 151,271.20/x
  3. Step 3: Cross multiply
    172,266.40x = 257,816.40 × 151,271.20
  4. Step 4: Simplify right side
    172,266.40x = 39,000,196,207.68
  5. Step 5: Solve for x
    x = 39,000,196,207.68/172,266.40
  6. Step 6: Final answer
    x = 226,394.68

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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.