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Finding the Fourth Proportional to 326,258.05, 489,386.16 and 89,600.95

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Solution

The fourth proportional to 326,258.05, 489,386.16 and 89,600.95 is: 134,401.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,258.05 : 489,386.16 = 89,600.95 : x
  2. Step 2: Convert to fraction form
    326,258.05/489,386.16 = 89,600.95/x
  3. Step 3: Cross multiply
    326,258.05x = 489,386.16 × 89,600.95
  4. Step 4: Simplify right side
    326,258.05x = 43,849,464,852.85
  5. Step 5: Solve for x
    x = 43,849,464,852.85/326,258.05
  6. Step 6: Final answer
    x = 134,401.17

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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.