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Finding the Fourth Proportional to 255,950.92, 384,259.74 and 172,086.76

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Solution

The fourth proportional to 255,950.92, 384,259.74 and 172,086.76 is: 258,354.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,950.92 : 384,259.74 = 172,086.76 : x
  2. Step 2: Convert to fraction form
    255,950.92/384,259.74 = 172,086.76/x
  3. Step 3: Cross multiply
    255,950.92x = 384,259.74 × 172,086.76
  4. Step 4: Simplify right side
    255,950.92x = 66,126,013,655.04
  5. Step 5: Solve for x
    x = 66,126,013,655.04/255,950.92
  6. Step 6: Final answer
    x = 258,354.27

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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.