Home / 313,621.80-470,432.70-76,961.40

Finding the Fourth Proportional to 313,621.80, 470,432.70 and 76,961.40

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Solution

The fourth proportional to 313,621.80, 470,432.70 and 76,961.40 is: 115,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,621.80 : 470,432.70 = 76,961.40 : x
  2. Step 2: Convert to fraction form
    313,621.80/470,432.70 = 76,961.40/x
  3. Step 3: Cross multiply
    313,621.80x = 470,432.70 × 76,961.40
  4. Step 4: Simplify right side
    313,621.80x = 36,205,159,197.78
  5. Step 5: Solve for x
    x = 36,205,159,197.78/313,621.80
  6. Step 6: Final answer
    x = 115,442.10

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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.