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Finding the Fourth Proportional to 172,055.40, 257,564.70 and 151,319.40

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Solution

The fourth proportional to 172,055.40, 257,564.70 and 151,319.40 is: 226,523.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,055.40 : 257,564.70 = 151,319.40 : x
  2. Step 2: Convert to fraction form
    172,055.40/257,564.70 = 151,319.40/x
  3. Step 3: Cross multiply
    172,055.40x = 257,564.70 × 151,319.40
  4. Step 4: Simplify right side
    172,055.40x = 38,974,535,865.18
  5. Step 5: Solve for x
    x = 38,974,535,865.18/172,055.40
  6. Step 6: Final answer
    x = 226,523.18

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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.