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Finding the Fourth Proportional to 251,262, 377,065.80 and 103,518

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Solution

The fourth proportional to 251,262, 377,065.80 and 103,518 is: 155,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,262 : 377,065.80 = 103,518 : x
  2. Step 2: Convert to fraction form
    251,262/377,065.80 = 103,518/x
  3. Step 3: Cross multiply
    251,262x = 377,065.80 × 103,518
  4. Step 4: Simplify right side
    251,262x = 39,033,097,484.40
  5. Step 5: Solve for x
    x = 39,033,097,484.40/251,262
  6. Step 6: Final answer
    x = 155,348.19

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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.