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Finding the Fourth Proportional to 339,031.68, 508,524.96 and 139,300.32

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Solution

The fourth proportional to 339,031.68, 508,524.96 and 139,300.32 is: 208,941.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,031.68 : 508,524.96 = 139,300.32 : x
  2. Step 2: Convert to fraction form
    339,031.68/508,524.96 = 139,300.32/x
  3. Step 3: Cross multiply
    339,031.68x = 508,524.96 × 139,300.32
  4. Step 4: Simplify right side
    339,031.68x = 70,837,689,655.99
  5. Step 5: Solve for x
    x = 70,837,689,655.99/339,031.68
  6. Step 6: Final answer
    x = 208,941.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.