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Finding the Fourth Proportional to 455,852.55, 683,787.62 and 140,309.13

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Solution

The fourth proportional to 455,852.55, 683,787.62 and 140,309.13 is: 210,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,852.55 : 683,787.62 = 140,309.13 : x
  2. Step 2: Convert to fraction form
    455,852.55/683,787.62 = 140,309.13/x
  3. Step 3: Cross multiply
    455,852.55x = 683,787.62 × 140,309.13
  4. Step 4: Simplify right side
    455,852.55x = 95,941,646,066.97
  5. Step 5: Solve for x
    x = 95,941,646,066.97/455,852.55
  6. Step 6: Final answer
    x = 210,466.40

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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.