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Finding the Fourth Proportional to 469,980.39, 648,555.62 and 255,115.74

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Solution

The fourth proportional to 469,980.39, 648,555.62 and 255,115.74 is: 352,050.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,980.39 : 648,555.62 = 255,115.74 : x
  2. Step 2: Convert to fraction form
    469,980.39/648,555.62 = 255,115.74/x
  3. Step 3: Cross multiply
    469,980.39x = 648,555.62 × 255,115.74
  4. Step 4: Simplify right side
    469,980.39x = 165,456,745,651.88
  5. Step 5: Solve for x
    x = 165,456,745,651.88/469,980.39
  6. Step 6: Final answer
    x = 352,050.32

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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.