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Finding the Fourth Proportional to 304,875.80, 457,313.70 and 80,270.90

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Solution

The fourth proportional to 304,875.80, 457,313.70 and 80,270.90 is: 120,406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,875.80 : 457,313.70 = 80,270.90 : x
  2. Step 2: Convert to fraction form
    304,875.80/457,313.70 = 80,270.90/x
  3. Step 3: Cross multiply
    304,875.80x = 457,313.70 × 80,270.90
  4. Step 4: Simplify right side
    304,875.80x = 36,708,982,281.33
  5. Step 5: Solve for x
    x = 36,708,982,281.33/304,875.80
  6. Step 6: Final answer
    x = 120,406.35

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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.