Home / 313,719.20-470,578.80-214,186.40

Finding the Fourth Proportional to 313,719.20, 470,578.80 and 214,186.40

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Solution

The fourth proportional to 313,719.20, 470,578.80 and 214,186.40 is: 321,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,719.20 : 470,578.80 = 214,186.40 : x
  2. Step 2: Convert to fraction form
    313,719.20/470,578.80 = 214,186.40/x
  3. Step 3: Cross multiply
    313,719.20x = 470,578.80 × 214,186.40
  4. Step 4: Simplify right side
    313,719.20x = 100,791,579,088.32
  5. Step 5: Solve for x
    x = 100,791,579,088.32/313,719.20
  6. Step 6: Final answer
    x = 321,279.60

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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.