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Finding the Fourth Proportional to 395,223.61, 545,482.47 and 225,457.73

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Solution

The fourth proportional to 395,223.61, 545,482.47 and 225,457.73 is: 311,173.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,223.61 : 545,482.47 = 225,457.73 : x
  2. Step 2: Convert to fraction form
    395,223.61/545,482.47 = 225,457.73/x
  3. Step 3: Cross multiply
    395,223.61x = 545,482.47 × 225,457.73
  4. Step 4: Simplify right side
    395,223.61x = 122,983,241,404.75
  5. Step 5: Solve for x
    x = 122,983,241,404.75/395,223.61
  6. Step 6: Final answer
    x = 311,173.82

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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.