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Finding the Fourth Proportional to 341,516.20, 512,420.10 and 163,931.80

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Solution

The fourth proportional to 341,516.20, 512,420.10 and 163,931.80 is: 245,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,516.20 : 512,420.10 = 163,931.80 : x
  2. Step 2: Convert to fraction form
    341,516.20/512,420.10 = 163,931.80/x
  3. Step 3: Cross multiply
    341,516.20x = 512,420.10 × 163,931.80
  4. Step 4: Simplify right side
    341,516.20x = 84,001,949,349.18
  5. Step 5: Solve for x
    x = 84,001,949,349.18/341,516.20
  6. Step 6: Final answer
    x = 245,967.69

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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.