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Finding the Fourth Proportional to 154,421.70, 231,523.20 and 70,222.20

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Solution

The fourth proportional to 154,421.70, 231,523.20 and 70,222.20 is: 105,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.70 : 231,523.20 = 70,222.20 : x
  2. Step 2: Convert to fraction form
    154,421.70/231,523.20 = 70,222.20/x
  3. Step 3: Cross multiply
    154,421.70x = 231,523.20 × 70,222.20
  4. Step 4: Simplify right side
    154,421.70x = 16,258,068,455.04
  5. Step 5: Solve for x
    x = 16,258,068,455.04/154,421.70
  6. Step 6: Final answer
    x = 105,283.57

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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.