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Finding the Fourth Proportional to 492,286, 679,354.68 and 265,931.50

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Solution

The fourth proportional to 492,286, 679,354.68 and 265,931.50 is: 366,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,286 : 679,354.68 = 265,931.50 : x
  2. Step 2: Convert to fraction form
    492,286/679,354.68 = 265,931.50/x
  3. Step 3: Cross multiply
    492,286x = 679,354.68 × 265,931.50
  4. Step 4: Simplify right side
    492,286x = 180,661,809,084.42
  5. Step 5: Solve for x
    x = 180,661,809,084.42/492,286
  6. Step 6: Final answer
    x = 366,985.47

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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.