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Finding the Fourth Proportional to 478,318.60, 660,079.61 and 263,458.67

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Solution

The fourth proportional to 478,318.60, 660,079.61 and 263,458.67 is: 363,572.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,318.60 : 660,079.61 = 263,458.67 : x
  2. Step 2: Convert to fraction form
    478,318.60/660,079.61 = 263,458.67/x
  3. Step 3: Cross multiply
    478,318.60x = 660,079.61 × 263,458.67
  4. Step 4: Simplify right side
    478,318.60x = 173,903,692,515.00
  5. Step 5: Solve for x
    x = 173,903,692,515.00/478,318.60
  6. Step 6: Final answer
    x = 363,572.92

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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.