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Finding the Fourth Proportional to 253,501.67, 380,240.97 and 85,009.04

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Solution

The fourth proportional to 253,501.67, 380,240.97 and 85,009.04 is: 127,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,501.67 : 380,240.97 = 85,009.04 : x
  2. Step 2: Convert to fraction form
    253,501.67/380,240.97 = 85,009.04/x
  3. Step 3: Cross multiply
    253,501.67x = 380,240.97 × 85,009.04
  4. Step 4: Simplify right side
    253,501.67x = 32,323,921,651.32
  5. Step 5: Solve for x
    x = 32,323,921,651.32/253,501.67
  6. Step 6: Final answer
    x = 127,509.70

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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.