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Finding the Fourth Proportional to 478,259.55, 660,028.02 and 263,399.56

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Solution

The fourth proportional to 478,259.55, 660,028.02 and 263,399.56 is: 363,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,259.55 : 660,028.02 = 263,399.56 : x
  2. Step 2: Convert to fraction form
    478,259.55/660,028.02 = 263,399.56/x
  3. Step 3: Cross multiply
    478,259.55x = 660,028.02 × 263,399.56
  4. Step 4: Simplify right side
    478,259.55x = 173,851,090,055.67
  5. Step 5: Solve for x
    x = 173,851,090,055.67/478,259.55
  6. Step 6: Final answer
    x = 363,507.83

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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.