Home / 212,954,411.80-319,431,617.70-109,642,281.40

Finding the Fourth Proportional to 212,954,411.80, 319,431,617.70 and 109,642,281.40

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Solution

The fourth proportional to 212,954,411.80, 319,431,617.70 and 109,642,281.40 is: 164,463,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,954,411.80 : 319,431,617.70 = 109,642,281.40 : x
  2. Step 2: Convert to fraction form
    212,954,411.80/319,431,617.70 = 109,642,281.40/x
  3. Step 3: Cross multiply
    212,954,411.80x = 319,431,617.70 × 109,642,281.40
  4. Step 4: Simplify right side
    212,954,411.80x = 35,023,211,315,920,620
  5. Step 5: Solve for x
    x = 35,023,211,315,920,620/212,954,411.80
  6. Step 6: Final answer
    x = 164,463,422.10

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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.