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Finding the Fourth Proportional to 377,697.09, 521,223.96 and 207,931.22

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Solution

The fourth proportional to 377,697.09, 521,223.96 and 207,931.22 is: 286,946.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,697.09 : 521,223.96 = 207,931.22 : x
  2. Step 2: Convert to fraction form
    377,697.09/521,223.96 = 207,931.22/x
  3. Step 3: Cross multiply
    377,697.09x = 521,223.96 × 207,931.22
  4. Step 4: Simplify right side
    377,697.09x = 108,378,731,289.91
  5. Step 5: Solve for x
    x = 108,378,731,289.91/377,697.09
  6. Step 6: Final answer
    x = 286,946.16

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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.