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Finding the Fourth Proportional to 395,303.55, 545,534.43 and 223,257.74

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Solution

The fourth proportional to 395,303.55, 545,534.43 and 223,257.74 is: 308,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,303.55 : 545,534.43 = 223,257.74 : x
  2. Step 2: Convert to fraction form
    395,303.55/545,534.43 = 223,257.74/x
  3. Step 3: Cross multiply
    395,303.55x = 545,534.43 × 223,257.74
  4. Step 4: Simplify right side
    395,303.55x = 121,794,781,206.32
  5. Step 5: Solve for x
    x = 121,794,781,206.32/395,303.55
  6. Step 6: Final answer
    x = 308,104.45

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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.