Home / 513,296.48-769,931.76-139,309.76

Finding the Fourth Proportional to 513,296.48, 769,931.76 and 139,309.76

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Solution

The fourth proportional to 513,296.48, 769,931.76 and 139,309.76 is: 208,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,296.48 : 769,931.76 = 139,309.76 : x
  2. Step 2: Convert to fraction form
    513,296.48/769,931.76 = 139,309.76/x
  3. Step 3: Cross multiply
    513,296.48x = 769,931.76 × 139,309.76
  4. Step 4: Simplify right side
    513,296.48x = 107,259,008,701.98
  5. Step 5: Solve for x
    x = 107,259,008,701.98/513,296.48
  6. Step 6: Final answer
    x = 208,961.12

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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.