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Finding the Fourth Proportional to 403,862.50, 605,865.80 and 134,006.86

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Solution

The fourth proportional to 403,862.50, 605,865.80 and 134,006.86 is: 201,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,862.50 : 605,865.80 = 134,006.86 : x
  2. Step 2: Convert to fraction form
    403,862.50/605,865.80 = 134,006.86/x
  3. Step 3: Cross multiply
    403,862.50x = 605,865.80 × 134,006.86
  4. Step 4: Simplify right side
    403,862.50x = 81,190,169,740.02
  5. Step 5: Solve for x
    x = 81,190,169,740.02/403,862.50
  6. Step 6: Final answer
    x = 201,034.19

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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.