Home / 310,556.02-428,582.70-189,677.74

Finding the Fourth Proportional to 310,556.02, 428,582.70 and 189,677.74

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Solution

The fourth proportional to 310,556.02, 428,582.70 and 189,677.74 is: 261,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,556.02 : 428,582.70 = 189,677.74 : x
  2. Step 2: Convert to fraction form
    310,556.02/428,582.70 = 189,677.74/x
  3. Step 3: Cross multiply
    310,556.02x = 428,582.70 × 189,677.74
  4. Step 4: Simplify right side
    310,556.02x = 81,292,597,939.10
  5. Step 5: Solve for x
    x = 81,292,597,939.10/310,556.02
  6. Step 6: Final answer
    x = 261,764.68

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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.