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Finding the Fourth Proportional to 340,474.80, 510,712.20 and 103,817.10

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Solution

The fourth proportional to 340,474.80, 510,712.20 and 103,817.10 is: 155,725.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,474.80 : 510,712.20 = 103,817.10 : x
  2. Step 2: Convert to fraction form
    340,474.80/510,712.20 = 103,817.10/x
  3. Step 3: Cross multiply
    340,474.80x = 510,712.20 × 103,817.10
  4. Step 4: Simplify right side
    340,474.80x = 53,020,659,538.62
  5. Step 5: Solve for x
    x = 53,020,659,538.62/340,474.80
  6. Step 6: Final answer
    x = 155,725.65

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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.