Home / 918,139.50-1,377,288.64-253,291.50

Finding the Fourth Proportional to 918,139.50, 1,377,288.64 and 253,291.50

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Solution

The fourth proportional to 918,139.50, 1,377,288.64 and 253,291.50 is: 379,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,139.50 : 1,377,288.64 = 253,291.50 : x
  2. Step 2: Convert to fraction form
    918,139.50/1,377,288.64 = 253,291.50/x
  3. Step 3: Cross multiply
    918,139.50x = 1,377,288.64 × 253,291.50
  4. Step 4: Simplify right side
    918,139.50x = 348,855,505,558.56
  5. Step 5: Solve for x
    x = 348,855,505,558.56/918,139.50
  6. Step 6: Final answer
    x = 379,959.15

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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.