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Finding the Fourth Proportional to 455,713.40, 683,570.10 and 268,935.80

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Solution

The fourth proportional to 455,713.40, 683,570.10 and 268,935.80 is: 403,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,713.40 : 683,570.10 = 268,935.80 : x
  2. Step 2: Convert to fraction form
    455,713.40/683,570.10 = 268,935.80/x
  3. Step 3: Cross multiply
    455,713.40x = 683,570.10 × 268,935.80
  4. Step 4: Simplify right side
    455,713.40x = 183,836,471,699.58
  5. Step 5: Solve for x
    x = 183,836,471,699.58/455,713.40
  6. Step 6: Final answer
    x = 403,403.70

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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.