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Finding the Fourth Proportional to 462,990.15, 638,951.27 and 259,028.91

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Solution

The fourth proportional to 462,990.15, 638,951.27 and 259,028.91 is: 357,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,990.15 : 638,951.27 = 259,028.91 : x
  2. Step 2: Convert to fraction form
    462,990.15/638,951.27 = 259,028.91/x
  3. Step 3: Cross multiply
    462,990.15x = 638,951.27 × 259,028.91
  4. Step 4: Simplify right side
    462,990.15x = 165,506,849,716.07
  5. Step 5: Solve for x
    x = 165,506,849,716.07/462,990.15
  6. Step 6: Final answer
    x = 357,473.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.