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Finding the Fourth Proportional to 323,975.19, 486,056.06 and 99,368.57

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Solution

The fourth proportional to 323,975.19, 486,056.06 and 99,368.57 is: 149,081.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,975.19 : 486,056.06 = 99,368.57 : x
  2. Step 2: Convert to fraction form
    323,975.19/486,056.06 = 99,368.57/x
  3. Step 3: Cross multiply
    323,975.19x = 486,056.06 × 99,368.57
  4. Step 4: Simplify right side
    323,975.19x = 48,298,696,712.96
  5. Step 5: Solve for x
    x = 48,298,696,712.96/323,975.19
  6. Step 6: Final answer
    x = 149,081.47

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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.