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Finding the Fourth Proportional to 377,192.48, 520,509.78 and 213,859.98

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Solution

The fourth proportional to 377,192.48, 520,509.78 and 213,859.98 is: 295,117.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,192.48 : 520,509.78 = 213,859.98 : x
  2. Step 2: Convert to fraction form
    377,192.48/520,509.78 = 213,859.98/x
  3. Step 3: Cross multiply
    377,192.48x = 520,509.78 × 213,859.98
  4. Step 4: Simplify right side
    377,192.48x = 111,316,211,140.60
  5. Step 5: Solve for x
    x = 111,316,211,140.60/377,192.48
  6. Step 6: Final answer
    x = 295,117.79

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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.