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Finding the Fourth Proportional to 478,279.49, 660,055.65 and 263,419.50

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Solution

The fourth proportional to 478,279.49, 660,055.65 and 263,419.50 is: 363,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,279.49 : 660,055.65 = 263,419.50 : x
  2. Step 2: Convert to fraction form
    478,279.49/660,055.65 = 263,419.50/x
  3. Step 3: Cross multiply
    478,279.49x = 660,055.65 × 263,419.50
  4. Step 4: Simplify right side
    478,279.49x = 173,871,529,295.18
  5. Step 5: Solve for x
    x = 173,871,529,295.18/478,279.49
  6. Step 6: Final answer
    x = 363,535.41

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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.