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Finding the Fourth Proportional to 478,279.24, 660,055.31 and 263,419.25

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Solution

The fourth proportional to 478,279.24, 660,055.31 and 263,419.25 is: 363,535.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,279.24 : 660,055.31 = 263,419.25 : x
  2. Step 2: Convert to fraction form
    478,279.24/660,055.31 = 263,419.25/x
  3. Step 3: Cross multiply
    478,279.24x = 660,055.31 × 263,419.25
  4. Step 4: Simplify right side
    478,279.24x = 173,871,274,718.72
  5. Step 5: Solve for x
    x = 173,871,274,718.72/478,279.24
  6. Step 6: Final answer
    x = 363,535.07

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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.