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Finding the Fourth Proportional to 478,349.80, 660,114.66 and 263,509.96

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Solution

The fourth proportional to 478,349.80, 660,114.66 and 263,509.96 is: 363,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,349.80 : 660,114.66 = 263,509.96 : x
  2. Step 2: Convert to fraction form
    478,349.80/660,114.66 = 263,509.96/x
  3. Step 3: Cross multiply
    478,349.80x = 660,114.66 × 263,509.96
  4. Step 4: Simplify right side
    478,349.80x = 173,946,787,652.01
  5. Step 5: Solve for x
    x = 173,946,787,652.01/478,349.80
  6. Step 6: Final answer
    x = 363,639.30

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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.