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Finding the Fourth Proportional to 538,922.40, 808,675.20 and 239,449.20

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Solution

The fourth proportional to 538,922.40, 808,675.20 and 239,449.20 is: 359,303.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,922.40 : 808,675.20 = 239,449.20 : x
  2. Step 2: Convert to fraction form
    538,922.40/808,675.20 = 239,449.20/x
  3. Step 3: Cross multiply
    538,922.40x = 808,675.20 × 239,449.20
  4. Step 4: Simplify right side
    538,922.40x = 193,636,629,699.84
  5. Step 5: Solve for x
    x = 193,636,629,699.84/538,922.40
  6. Step 6: Final answer
    x = 359,303.36

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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.