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Finding the Fourth Proportional to 326,681.90, 489,366.74 and 148,944.41

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Solution

The fourth proportional to 326,681.90, 489,366.74 and 148,944.41 is: 223,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,681.90 : 489,366.74 = 148,944.41 : x
  2. Step 2: Convert to fraction form
    326,681.90/489,366.74 = 148,944.41/x
  3. Step 3: Cross multiply
    326,681.90x = 489,366.74 × 148,944.41
  4. Step 4: Simplify right side
    326,681.90x = 72,888,437,171.37
  5. Step 5: Solve for x
    x = 72,888,437,171.37/326,681.90
  6. Step 6: Final answer
    x = 223,117.47

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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.