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Finding the Fourth Proportional to 326,025, 489,081.24 and 139,080.24

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Solution

The fourth proportional to 326,025, 489,081.24 and 139,080.24 is: 208,639.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,025 : 489,081.24 = 139,080.24 : x
  2. Step 2: Convert to fraction form
    326,025/489,081.24 = 139,080.24/x
  3. Step 3: Cross multiply
    326,025x = 489,081.24 × 139,080.24
  4. Step 4: Simplify right side
    326,025x = 68,021,536,238.70
  5. Step 5: Solve for x
    x = 68,021,536,238.70/326,025
  6. Step 6: Final answer
    x = 208,639.02

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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.