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Finding the Fourth Proportional to 326,141.65, 489,212.48 and 157,742.65

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Solution

The fourth proportional to 326,141.65, 489,212.48 and 157,742.65 is: 236,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,141.65 : 489,212.48 = 157,742.65 : x
  2. Step 2: Convert to fraction form
    326,141.65/489,212.48 = 157,742.65/x
  3. Step 3: Cross multiply
    326,141.65x = 489,212.48 × 157,742.65
  4. Step 4: Simplify right side
    326,141.65x = 77,169,672,219.56
  5. Step 5: Solve for x
    x = 77,169,672,219.56/326,141.65
  6. Step 6: Final answer
    x = 236,613.98

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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.