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Finding the Fourth Proportional to 492,401.50, 679,552.95 and 274,641.10

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Solution

The fourth proportional to 492,401.50, 679,552.95 and 274,641.10 is: 379,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,401.50 : 679,552.95 = 274,641.10 : x
  2. Step 2: Convert to fraction form
    492,401.50/679,552.95 = 274,641.10/x
  3. Step 3: Cross multiply
    492,401.50x = 679,552.95 × 274,641.10
  4. Step 4: Simplify right side
    492,401.50x = 186,633,169,696.25
  5. Step 5: Solve for x
    x = 186,633,169,696.25/492,401.50
  6. Step 6: Final answer
    x = 379,026.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.