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Finding the Fourth Proportional to 323,345.18, 485,017.81 and 98,706.80

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Solution

The fourth proportional to 323,345.18, 485,017.81 and 98,706.80 is: 148,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,345.18 : 485,017.81 = 98,706.80 : x
  2. Step 2: Convert to fraction form
    323,345.18/485,017.81 = 98,706.80/x
  3. Step 3: Cross multiply
    323,345.18x = 485,017.81 × 98,706.80
  4. Step 4: Simplify right side
    323,345.18x = 47,874,556,933.89
  5. Step 5: Solve for x
    x = 47,874,556,933.89/323,345.18
  6. Step 6: Final answer
    x = 148,060.21

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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.