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Finding the Fourth Proportional to 306,588.25, 459,908.30 and 84,972.25

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Solution

The fourth proportional to 306,588.25, 459,908.30 and 84,972.25 is: 127,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,588.25 : 459,908.30 = 84,972.25 : x
  2. Step 2: Convert to fraction form
    306,588.25/459,908.30 = 84,972.25/x
  3. Step 3: Cross multiply
    306,588.25x = 459,908.30 × 84,972.25
  4. Step 4: Simplify right side
    306,588.25x = 39,079,443,044.68
  5. Step 5: Solve for x
    x = 39,079,443,044.68/306,588.25
  6. Step 6: Final answer
    x = 127,465.56

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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.