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Finding the Fourth Proportional to 611,076.45, 916,668 and 251,269.19

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Solution

The fourth proportional to 611,076.45, 916,668 and 251,269.19 is: 376,925.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,076.45 : 916,668 = 251,269.19 : x
  2. Step 2: Convert to fraction form
    611,076.45/916,668 = 251,269.19/x
  3. Step 3: Cross multiply
    611,076.45x = 916,668 × 251,269.19
  4. Step 4: Simplify right side
    611,076.45x = 230,330,421,275.58
  5. Step 5: Solve for x
    x = 230,330,421,275.58/611,076.45
  6. Step 6: Final answer
    x = 376,925.70

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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.