Home / 659,256.20-988,556.80-209,918.40

Finding the Fourth Proportional to 659,256.20, 988,556.80 and 209,918.40

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Solution

The fourth proportional to 659,256.20, 988,556.80 and 209,918.40 is: 314,773.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,256.20 : 988,556.80 = 209,918.40 : x
  2. Step 2: Convert to fraction form
    659,256.20/988,556.80 = 209,918.40/x
  3. Step 3: Cross multiply
    659,256.20x = 988,556.80 × 209,918.40
  4. Step 4: Simplify right side
    659,256.20x = 207,516,261,765.12
  5. Step 5: Solve for x
    x = 207,516,261,765.12/659,256.20
  6. Step 6: Final answer
    x = 314,773.32

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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.