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Finding the Fourth Proportional to 357,053.98, 492,286.10 and 261,394.60

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Solution

The fourth proportional to 357,053.98, 492,286.10 and 261,394.60 is: 360,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,053.98 : 492,286.10 = 261,394.60 : x
  2. Step 2: Convert to fraction form
    357,053.98/492,286.10 = 261,394.60/x
  3. Step 3: Cross multiply
    357,053.98x = 492,286.10 × 261,394.60
  4. Step 4: Simplify right side
    357,053.98x = 128,680,928,195.06
  5. Step 5: Solve for x
    x = 128,680,928,195.06/357,053.98
  6. Step 6: Final answer
    x = 360,396.29

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1.5x scale

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.