Home / 212,954,410.80-319,431,616.20-109,642,280.40

Finding the Fourth Proportional to 212,954,410.80, 319,431,616.20 and 109,642,280.40

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Solution

The fourth proportional to 212,954,410.80, 319,431,616.20 and 109,642,280.40 is: 164,463,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,954,410.80 : 319,431,616.20 = 109,642,280.40 : x
  2. Step 2: Convert to fraction form
    212,954,410.80/319,431,616.20 = 109,642,280.40/x
  3. Step 3: Cross multiply
    212,954,410.80x = 319,431,616.20 × 109,642,280.40
  4. Step 4: Simplify right side
    212,954,410.80x = 35,023,210,832,025,584
  5. Step 5: Solve for x
    x = 35,023,210,832,025,584/212,954,410.80
  6. Step 6: Final answer
    x = 164,463,420.60

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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.