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Finding the Fourth Proportional to 478,263.38, 660,033.30 and 263,403.38

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Solution

The fourth proportional to 478,263.38, 660,033.30 and 263,403.38 is: 363,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,263.38 : 660,033.30 = 263,403.38 : x
  2. Step 2: Convert to fraction form
    478,263.38/660,033.30 = 263,403.38/x
  3. Step 3: Cross multiply
    478,263.38x = 660,033.30 × 263,403.38
  4. Step 4: Simplify right side
    478,263.38x = 173,855,002,132.55
  5. Step 5: Solve for x
    x = 173,855,002,132.55/478,263.38
  6. Step 6: Final answer
    x = 363,513.10

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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.