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Finding the Fourth Proportional to 477,981.36, 716,806.78 and 211,927.94

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Solution

The fourth proportional to 477,981.36, 716,806.78 and 211,927.94 is: 317,818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,981.36 : 716,806.78 = 211,927.94 : x
  2. Step 2: Convert to fraction form
    477,981.36/716,806.78 = 211,927.94/x
  3. Step 3: Cross multiply
    477,981.36x = 716,806.78 × 211,927.94
  4. Step 4: Simplify right side
    477,981.36x = 151,911,384,263.43
  5. Step 5: Solve for x
    x = 151,911,384,263.43/477,981.36
  6. Step 6: Final answer
    x = 317,818.64

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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.