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Finding the Fourth Proportional to 345,347.41, 518,076.48 and 145,697.21

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Solution

The fourth proportional to 345,347.41, 518,076.48 and 145,697.21 is: 218,569.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,347.41 : 518,076.48 = 145,697.21 : x
  2. Step 2: Convert to fraction form
    345,347.41/518,076.48 = 145,697.21/x
  3. Step 3: Cross multiply
    345,347.41x = 518,076.48 × 145,697.21
  4. Step 4: Simplify right side
    345,347.41x = 75,482,297,702.62
  5. Step 5: Solve for x
    x = 75,482,297,702.62/345,347.41
  6. Step 6: Final answer
    x = 218,569.17

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1.5x scale

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.