Home / 420,215.23-630,328.41-132,017.47

Finding the Fourth Proportional to 420,215.23, 630,328.41 and 132,017.47

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Solution

The fourth proportional to 420,215.23, 630,328.41 and 132,017.47 is: 198,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,215.23 : 630,328.41 = 132,017.47 : x
  2. Step 2: Convert to fraction form
    420,215.23/630,328.41 = 132,017.47/x
  3. Step 3: Cross multiply
    420,215.23x = 630,328.41 × 132,017.47
  4. Step 4: Simplify right side
    420,215.23x = 83,214,361,957.32
  5. Step 5: Solve for x
    x = 83,214,361,957.32/420,215.23
  6. Step 6: Final answer
    x = 198,027.95

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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.