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Finding the Fourth Proportional to 455,570.64, 683,468.75 and 135,721.08

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Solution

The fourth proportional to 455,570.64, 683,468.75 and 135,721.08 is: 203,615.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,570.64 : 683,468.75 = 135,721.08 : x
  2. Step 2: Convert to fraction form
    455,570.64/683,468.75 = 135,721.08/x
  3. Step 3: Cross multiply
    455,570.64x = 683,468.75 × 135,721.08
  4. Step 4: Simplify right side
    455,570.64x = 92,761,117,235.55
  5. Step 5: Solve for x
    x = 92,761,117,235.55/455,570.64
  6. Step 6: Final answer
    x = 203,615.22

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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.