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Finding the Fourth Proportional to 320,025.61, 480,339.74 and 162,367.21

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Solution

The fourth proportional to 320,025.61, 480,339.74 and 162,367.21 is: 243,703.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,025.61 : 480,339.74 = 162,367.21 : x
  2. Step 2: Convert to fraction form
    320,025.61/480,339.74 = 162,367.21/x
  3. Step 3: Cross multiply
    320,025.61x = 480,339.74 × 162,367.21
  4. Step 4: Simplify right side
    320,025.61x = 77,991,423,435.93
  5. Step 5: Solve for x
    x = 77,991,423,435.93/320,025.61
  6. Step 6: Final answer
    x = 243,703.69

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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.