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Finding the Fourth Proportional to 326,049, 489,117.24 and 139,104.24

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Solution

The fourth proportional to 326,049, 489,117.24 and 139,104.24 is: 208,675.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,049 : 489,117.24 = 139,104.24 : x
  2. Step 2: Convert to fraction form
    326,049/489,117.24 = 139,104.24/x
  3. Step 3: Cross multiply
    326,049x = 489,117.24 × 139,104.24
  4. Step 4: Simplify right side
    326,049x = 68,038,281,941.10
  5. Step 5: Solve for x
    x = 68,038,281,941.10/326,049
  6. Step 6: Final answer
    x = 208,675.02

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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.