Home / 430,834.20-646,280.10-146,520.60

Finding the Fourth Proportional to 430,834.20, 646,280.10 and 146,520.60

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Solution

The fourth proportional to 430,834.20, 646,280.10 and 146,520.60 is: 219,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,834.20 : 646,280.10 = 146,520.60 : x
  2. Step 2: Convert to fraction form
    430,834.20/646,280.10 = 146,520.60/x
  3. Step 3: Cross multiply
    430,834.20x = 646,280.10 × 146,520.60
  4. Step 4: Simplify right side
    430,834.20x = 94,693,348,020.06
  5. Step 5: Solve for x
    x = 94,693,348,020.06/430,834.20
  6. Step 6: Final answer
    x = 219,790.69

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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.