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Finding the Fourth Proportional to 538,810.40, 808,215.60 and 349,853.60

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Solution

The fourth proportional to 538,810.40, 808,215.60 and 349,853.60 is: 524,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,810.40 : 808,215.60 = 349,853.60 : x
  2. Step 2: Convert to fraction form
    538,810.40/808,215.60 = 349,853.60/x
  3. Step 3: Cross multiply
    538,810.40x = 808,215.60 × 349,853.60
  4. Step 4: Simplify right side
    538,810.40x = 282,757,137,236.16
  5. Step 5: Solve for x
    x = 282,757,137,236.16/538,810.40
  6. Step 6: Final answer
    x = 524,780.40

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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.