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Finding the Fourth Proportional to 538,708.40, 808,937.40 and 361,998.80

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Solution

The fourth proportional to 538,708.40, 808,937.40 and 361,998.80 is: 543,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,708.40 : 808,937.40 = 361,998.80 : x
  2. Step 2: Convert to fraction form
    538,708.40/808,937.40 = 361,998.80/x
  3. Step 3: Cross multiply
    538,708.40x = 808,937.40 × 361,998.80
  4. Step 4: Simplify right side
    538,708.40x = 292,834,368,075.12
  5. Step 5: Solve for x
    x = 292,834,368,075.12/538,708.40
  6. Step 6: Final answer
    x = 543,586.04

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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.