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Finding the Fourth Proportional to 538,840.80, 808,261.20 and 328,888.80

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Solution

The fourth proportional to 538,840.80, 808,261.20 and 328,888.80 is: 493,333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,840.80 : 808,261.20 = 328,888.80 : x
  2. Step 2: Convert to fraction form
    538,840.80/808,261.20 = 328,888.80/x
  3. Step 3: Cross multiply
    538,840.80x = 808,261.20 × 328,888.80
  4. Step 4: Simplify right side
    538,840.80x = 265,828,056,154.56
  5. Step 5: Solve for x
    x = 265,828,056,154.56/538,840.80
  6. Step 6: Final answer
    x = 493,333.20

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Similar ratio
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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.