Home / 420,204.71-630,222.01-153,874.28

Finding the Fourth Proportional to 420,204.71, 630,222.01 and 153,874.28

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Solution

The fourth proportional to 420,204.71, 630,222.01 and 153,874.28 is: 230,780.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,204.71 : 630,222.01 = 153,874.28 : x
  2. Step 2: Convert to fraction form
    420,204.71/630,222.01 = 153,874.28/x
  3. Step 3: Cross multiply
    420,204.71x = 630,222.01 × 153,874.28
  4. Step 4: Simplify right side
    420,204.71x = 96,974,954,493.11
  5. Step 5: Solve for x
    x = 96,974,954,493.11/420,204.71
  6. Step 6: Final answer
    x = 230,780.27

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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.