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Finding the Fourth Proportional to 326,625.06, 489,688.40 and 149,007.86

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Solution

The fourth proportional to 326,625.06, 489,688.40 and 149,007.86 is: 223,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,625.06 : 489,688.40 = 149,007.86 : x
  2. Step 2: Convert to fraction form
    326,625.06/489,688.40 = 149,007.86/x
  3. Step 3: Cross multiply
    326,625.06x = 489,688.40 × 149,007.86
  4. Step 4: Simplify right side
    326,625.06x = 72,967,417,357.34
  5. Step 5: Solve for x
    x = 72,967,417,357.34/326,625.06
  6. Step 6: Final answer
    x = 223,398.10

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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.