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Finding the Fourth Proportional to 303,545.90, 455,239.50 and 90,256.37

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Solution

The fourth proportional to 303,545.90, 455,239.50 and 90,256.37 is: 135,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,545.90 : 455,239.50 = 90,256.37 : x
  2. Step 2: Convert to fraction form
    303,545.90/455,239.50 = 90,256.37/x
  3. Step 3: Cross multiply
    303,545.90x = 455,239.50 × 90,256.37
  4. Step 4: Simplify right side
    303,545.90x = 41,088,262,023.14
  5. Step 5: Solve for x
    x = 41,088,262,023.14/303,545.90
  6. Step 6: Final answer
    x = 135,360.95

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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.