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Finding the Fourth Proportional to 228,287.40, 342,467.58 and 70,478.76

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Solution

The fourth proportional to 228,287.40, 342,467.58 and 70,478.76 is: 105,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,287.40 : 342,467.58 = 70,478.76 : x
  2. Step 2: Convert to fraction form
    228,287.40/342,467.58 = 70,478.76/x
  3. Step 3: Cross multiply
    228,287.40x = 342,467.58 × 70,478.76
  4. Step 4: Simplify right side
    228,287.40x = 24,136,690,378.60
  5. Step 5: Solve for x
    x = 24,136,690,378.60/228,287.40
  6. Step 6: Final answer
    x = 105,729.40

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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.