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Finding the Fourth Proportional to 547,816.74, 821,725.12 and 148,457.49

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Solution

The fourth proportional to 547,816.74, 821,725.12 and 148,457.49 is: 222,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,816.74 : 821,725.12 = 148,457.49 : x
  2. Step 2: Convert to fraction form
    547,816.74/821,725.12 = 148,457.49/x
  3. Step 3: Cross multiply
    547,816.74x = 821,725.12 × 148,457.49
  4. Step 4: Simplify right side
    547,816.74x = 121,991,248,042.86
  5. Step 5: Solve for x
    x = 121,991,248,042.86/547,816.74
  6. Step 6: Final answer
    x = 222,686.24

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Similar ratio
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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.