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Finding the Fourth Proportional to 225,220.70, 310,929.84 and 156,412.22

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Solution

The fourth proportional to 225,220.70, 310,929.84 and 156,412.22 is: 215,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,220.70 : 310,929.84 = 156,412.22 : x
  2. Step 2: Convert to fraction form
    225,220.70/310,929.84 = 156,412.22/x
  3. Step 3: Cross multiply
    225,220.70x = 310,929.84 × 156,412.22
  4. Step 4: Simplify right side
    225,220.70x = 48,633,224,984.00
  5. Step 5: Solve for x
    x = 48,633,224,984.00/225,220.70
  6. Step 6: Final answer
    x = 215,935.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.