Home / 309,913.40-464,999.70-99,615.80

Finding the Fourth Proportional to 309,913.40, 464,999.70 and 99,615.80

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Solution

The fourth proportional to 309,913.40, 464,999.70 and 99,615.80 is: 149,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,913.40 : 464,999.70 = 99,615.80 : x
  2. Step 2: Convert to fraction form
    309,913.40/464,999.70 = 99,615.80/x
  3. Step 3: Cross multiply
    309,913.40x = 464,999.70 × 99,615.80
  4. Step 4: Simplify right side
    309,913.40x = 46,321,317,115.26
  5. Step 5: Solve for x
    x = 46,321,317,115.26/309,913.40
  6. Step 6: Final answer
    x = 149,465.36

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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.