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Finding the Fourth Proportional to 343,381.60, 515,072.40 and 106,722.40

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Solution

The fourth proportional to 343,381.60, 515,072.40 and 106,722.40 is: 160,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,381.60 : 515,072.40 = 106,722.40 : x
  2. Step 2: Convert to fraction form
    343,381.60/515,072.40 = 106,722.40/x
  3. Step 3: Cross multiply
    343,381.60x = 515,072.40 × 106,722.40
  4. Step 4: Simplify right side
    343,381.60x = 54,969,762,701.76
  5. Step 5: Solve for x
    x = 54,969,762,701.76/343,381.60
  6. Step 6: Final answer
    x = 160,083.60

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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.