Home / 313,868.80-470,918.40-126,899.20

Finding the Fourth Proportional to 313,868.80, 470,918.40 and 126,899.20

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Solution

The fourth proportional to 313,868.80, 470,918.40 and 126,899.20 is: 190,395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,868.80 : 470,918.40 = 126,899.20 : x
  2. Step 2: Convert to fraction form
    313,868.80/470,918.40 = 126,899.20/x
  3. Step 3: Cross multiply
    313,868.80x = 470,918.40 × 126,899.20
  4. Step 4: Simplify right side
    313,868.80x = 59,759,168,225.28
  5. Step 5: Solve for x
    x = 59,759,168,225.28/313,868.80
  6. Step 6: Final answer
    x = 190,395.38

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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.