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Finding the Fourth Proportional to 154,509.80, 231,764.70 and 70,310.30

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Solution

The fourth proportional to 154,509.80, 231,764.70 and 70,310.30 is: 105,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,509.80 : 231,764.70 = 70,310.30 : x
  2. Step 2: Convert to fraction form
    154,509.80/231,764.70 = 70,310.30/x
  3. Step 3: Cross multiply
    154,509.80x = 231,764.70 × 70,310.30
  4. Step 4: Simplify right side
    154,509.80x = 16,295,445,586.41
  5. Step 5: Solve for x
    x = 16,295,445,586.41/154,509.80
  6. Step 6: Final answer
    x = 105,465.45

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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.