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Finding the Fourth Proportional to 478,254.25, 659,221.63 and 323,157.11

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Solution

The fourth proportional to 478,254.25, 659,221.63 and 323,157.11 is: 445,437.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,254.25 : 659,221.63 = 323,157.11 : x
  2. Step 2: Convert to fraction form
    478,254.25/659,221.63 = 323,157.11/x
  3. Step 3: Cross multiply
    478,254.25x = 659,221.63 × 323,157.11
  4. Step 4: Simplify right side
    478,254.25x = 213,032,156,784.16
  5. Step 5: Solve for x
    x = 213,032,156,784.16/478,254.25
  6. Step 6: Final answer
    x = 445,437.04

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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.