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Finding the Fourth Proportional to 478,262.37, 660,031.91 and 263,402.38

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Solution

The fourth proportional to 478,262.37, 660,031.91 and 263,402.38 is: 363,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,262.37 : 660,031.91 = 263,402.38 : x
  2. Step 2: Convert to fraction form
    478,262.37/660,031.91 = 263,402.38/x
  3. Step 3: Cross multiply
    478,262.37x = 660,031.91 × 263,402.38
  4. Step 4: Simplify right side
    478,262.37x = 173,853,975,969.95
  5. Step 5: Solve for x
    x = 173,853,975,969.95/478,262.37
  6. Step 6: Final answer
    x = 363,511.72

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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.