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Finding the Fourth Proportional to 303,498.30, 455,247.45 and 185,400.30

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Solution

The fourth proportional to 303,498.30, 455,247.45 and 185,400.30 is: 278,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,498.30 : 455,247.45 = 185,400.30 : x
  2. Step 2: Convert to fraction form
    303,498.30/455,247.45 = 185,400.30/x
  3. Step 3: Cross multiply
    303,498.30x = 455,247.45 × 185,400.30
  4. Step 4: Simplify right side
    303,498.30x = 84,403,013,804.24
  5. Step 5: Solve for x
    x = 84,403,013,804.24/303,498.30
  6. Step 6: Final answer
    x = 278,100.45

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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.