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Finding the Fourth Proportional to 308,931.86, 462,561.47 and 218,603.28

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Solution

The fourth proportional to 308,931.86, 462,561.47 and 218,603.28 is: 327,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,931.86 : 462,561.47 = 218,603.28 : x
  2. Step 2: Convert to fraction form
    308,931.86/462,561.47 = 218,603.28/x
  3. Step 3: Cross multiply
    308,931.86x = 462,561.47 × 218,603.28
  4. Step 4: Simplify right side
    308,931.86x = 101,117,453,450.61
  5. Step 5: Solve for x
    x = 101,117,453,450.61/308,931.86
  6. Step 6: Final answer
    x = 327,313.13

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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.