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Finding the Fourth Proportional to 492,492.54, 679,639.71 and 266,138.04

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Solution

The fourth proportional to 492,492.54, 679,639.71 and 266,138.04 is: 367,270.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,492.54 : 679,639.71 = 266,138.04 : x
  2. Step 2: Convert to fraction form
    492,492.54/679,639.71 = 266,138.04/x
  3. Step 3: Cross multiply
    492,492.54x = 679,639.71 × 266,138.04
  4. Step 4: Simplify right side
    492,492.54x = 180,877,980,325.57
  5. Step 5: Solve for x
    x = 180,877,980,325.57/492,492.54
  6. Step 6: Final answer
    x = 367,270.50

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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.