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Finding the Fourth Proportional to 152,612.40, 228,940.20 and 47,420.40

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Solution

The fourth proportional to 152,612.40, 228,940.20 and 47,420.40 is: 71,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,612.40 : 228,940.20 = 47,420.40 : x
  2. Step 2: Convert to fraction form
    152,612.40/228,940.20 = 47,420.40/x
  3. Step 3: Cross multiply
    152,612.40x = 228,940.20 × 47,420.40
  4. Step 4: Simplify right side
    152,612.40x = 10,856,435,860.08
  5. Step 5: Solve for x
    x = 10,856,435,860.08/152,612.40
  6. Step 6: Final answer
    x = 71,137.31

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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.