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Finding the Fourth Proportional to 538,812.17, 808,165.78 and 218,983.22

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Solution

The fourth proportional to 538,812.17, 808,165.78 and 218,983.22 is: 328,453.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,812.17 : 808,165.78 = 218,983.22 : x
  2. Step 2: Convert to fraction form
    538,812.17/808,165.78 = 218,983.22/x
  3. Step 3: Cross multiply
    538,812.17x = 808,165.78 × 218,983.22
  4. Step 4: Simplify right side
    538,812.17x = 176,974,740,209.93
  5. Step 5: Solve for x
    x = 176,974,740,209.93/538,812.17
  6. Step 6: Final answer
    x = 328,453.49

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1.5x scale

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.