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Finding the Fourth Proportional to 276,762.80, 415,022.70 and 126,953.30

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Solution

The fourth proportional to 276,762.80, 415,022.70 and 126,953.30 is: 190,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,762.80 : 415,022.70 = 126,953.30 : x
  2. Step 2: Convert to fraction form
    276,762.80/415,022.70 = 126,953.30/x
  3. Step 3: Cross multiply
    276,762.80x = 415,022.70 × 126,953.30
  4. Step 4: Simplify right side
    276,762.80x = 52,688,501,339.91
  5. Step 5: Solve for x
    x = 52,688,501,339.91/276,762.80
  6. Step 6: Final answer
    x = 190,374.22

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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.