Home / 205,931.40-308,868.30-65,704.20

Finding the Fourth Proportional to 205,931.40, 308,868.30 and 65,704.20

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Solution

The fourth proportional to 205,931.40, 308,868.30 and 65,704.20 is: 98,547.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,931.40 : 308,868.30 = 65,704.20 : x
  2. Step 2: Convert to fraction form
    205,931.40/308,868.30 = 65,704.20/x
  3. Step 3: Cross multiply
    205,931.40x = 308,868.30 × 65,704.20
  4. Step 4: Simplify right side
    205,931.40x = 20,293,944,556.86
  5. Step 5: Solve for x
    x = 20,293,944,556.86/205,931.40
  6. Step 6: Final answer
    x = 98,547.11

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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.