Home / 878,987.20-1,318,480.80-214,139.20

Finding the Fourth Proportional to 878,987.20, 1,318,480.80 and 214,139.20

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Solution

The fourth proportional to 878,987.20, 1,318,480.80 and 214,139.20 is: 321,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,987.20 : 1,318,480.80 = 214,139.20 : x
  2. Step 2: Convert to fraction form
    878,987.20/1,318,480.80 = 214,139.20/x
  3. Step 3: Cross multiply
    878,987.20x = 1,318,480.80 × 214,139.20
  4. Step 4: Simplify right side
    878,987.20x = 282,338,423,727.36
  5. Step 5: Solve for x
    x = 282,338,423,727.36/878,987.20
  6. Step 6: Final answer
    x = 321,208.80

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1.5x scale

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.