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Finding the Fourth Proportional to 262,285.79, 393,419.34 and 84,788.15

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Solution

The fourth proportional to 262,285.79, 393,419.34 and 84,788.15 is: 127,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,285.79 : 393,419.34 = 84,788.15 : x
  2. Step 2: Convert to fraction form
    262,285.79/393,419.34 = 84,788.15/x
  3. Step 3: Cross multiply
    262,285.79x = 393,419.34 × 84,788.15
  4. Step 4: Simplify right side
    262,285.79x = 33,357,296,045.72
  5. Step 5: Solve for x
    x = 33,357,296,045.72/262,285.79
  6. Step 6: Final answer
    x = 127,179.20

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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.