Home / 310,288.03-465,458.76-85,648.50

Finding the Fourth Proportional to 310,288.03, 465,458.76 and 85,648.50

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Solution

The fourth proportional to 310,288.03, 465,458.76 and 85,648.50 is: 128,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,288.03 : 465,458.76 = 85,648.50 : x
  2. Step 2: Convert to fraction form
    310,288.03/465,458.76 = 85,648.50/x
  3. Step 3: Cross multiply
    310,288.03x = 465,458.76 × 85,648.50
  4. Step 4: Simplify right side
    310,288.03x = 39,865,844,605.86
  5. Step 5: Solve for x
    x = 39,865,844,605.86/310,288.03
  6. Step 6: Final answer
    x = 128,480.12

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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.