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Finding the Fourth Proportional to 326,514.39, 489,810.53 and 157,913.56

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Solution

The fourth proportional to 326,514.39, 489,810.53 and 157,913.56 is: 236,889.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,514.39 : 489,810.53 = 157,913.56 : x
  2. Step 2: Convert to fraction form
    326,514.39/489,810.53 = 157,913.56/x
  3. Step 3: Cross multiply
    326,514.39x = 489,810.53 × 157,913.56
  4. Step 4: Simplify right side
    326,514.39x = 77,347,724,517.79
  5. Step 5: Solve for x
    x = 77,347,724,517.79/326,514.39
  6. Step 6: Final answer
    x = 236,889.18

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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.