Home / 218,878.20-328,317.30-140,146.20

Finding the Fourth Proportional to 218,878.20, 328,317.30 and 140,146.20

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Solution

The fourth proportional to 218,878.20, 328,317.30 and 140,146.20 is: 210,219.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,878.20 : 328,317.30 = 140,146.20 : x
  2. Step 2: Convert to fraction form
    218,878.20/328,317.30 = 140,146.20/x
  3. Step 3: Cross multiply
    218,878.20x = 328,317.30 × 140,146.20
  4. Step 4: Simplify right side
    218,878.20x = 46,012,421,989.26
  5. Step 5: Solve for x
    x = 46,012,421,989.26/218,878.20
  6. Step 6: Final answer
    x = 210,219.30

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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.