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Finding the Fourth Proportional to 341,971.60, 512,179.80 and 216,000.40

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Solution

The fourth proportional to 341,971.60, 512,179.80 and 216,000.40 is: 323,509.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,971.60 : 512,179.80 = 216,000.40 : x
  2. Step 2: Convert to fraction form
    341,971.60/512,179.80 = 216,000.40/x
  3. Step 3: Cross multiply
    341,971.60x = 512,179.80 × 216,000.40
  4. Step 4: Simplify right side
    341,971.60x = 110,631,041,671.92
  5. Step 5: Solve for x
    x = 110,631,041,671.92/341,971.60
  6. Step 6: Final answer
    x = 323,509.44

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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.