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Finding the Fourth Proportional to 357,055.58, 492,288.36 and 261,396.20

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Solution

The fourth proportional to 357,055.58, 492,288.36 and 261,396.20 is: 360,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,055.58 : 492,288.36 = 261,396.20 : x
  2. Step 2: Convert to fraction form
    357,055.58/492,288.36 = 261,396.20/x
  3. Step 3: Cross multiply
    357,055.58x = 492,288.36 × 261,396.20
  4. Step 4: Simplify right side
    357,055.58x = 128,682,304,146.79
  5. Step 5: Solve for x
    x = 128,682,304,146.79/357,055.58
  6. Step 6: Final answer
    x = 360,398.53

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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.