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Finding the Fourth Proportional to 610,545.18, 915,957.27 and 211,185.62

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Solution

The fourth proportional to 610,545.18, 915,957.27 and 211,185.62 is: 316,826.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,545.18 : 915,957.27 = 211,185.62 : x
  2. Step 2: Convert to fraction form
    610,545.18/915,957.27 = 211,185.62/x
  3. Step 3: Cross multiply
    610,545.18x = 915,957.27 × 211,185.62
  4. Step 4: Simplify right side
    610,545.18x = 193,436,999,378.67
  5. Step 5: Solve for x
    x = 193,436,999,378.67/610,545.18
  6. Step 6: Final answer
    x = 316,826.68

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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.