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Finding the Fourth Proportional to 262,470.50, 393,768.45 and 84,977.69

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Solution

The fourth proportional to 262,470.50, 393,768.45 and 84,977.69 is: 127,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,470.50 : 393,768.45 = 84,977.69 : x
  2. Step 2: Convert to fraction form
    262,470.50/393,768.45 = 84,977.69/x
  3. Step 3: Cross multiply
    262,470.50x = 393,768.45 × 84,977.69
  4. Step 4: Simplify right side
    262,470.50x = 33,461,534,260.30
  5. Step 5: Solve for x
    x = 33,461,534,260.30/262,470.50
  6. Step 6: Final answer
    x = 127,486.84

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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.