Home / 420,856.40-630,869.04-167,984.56

Finding the Fourth Proportional to 420,856.40, 630,869.04 and 167,984.56

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Solution

The fourth proportional to 420,856.40, 630,869.04 and 167,984.56 is: 251,810.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,856.40 : 630,869.04 = 167,984.56 : x
  2. Step 2: Convert to fraction form
    420,856.40/630,869.04 = 167,984.56/x
  3. Step 3: Cross multiply
    420,856.40x = 630,869.04 × 167,984.56
  4. Step 4: Simplify right side
    420,856.40x = 105,976,258,102.02
  5. Step 5: Solve for x
    x = 105,976,258,102.02/420,856.40
  6. Step 6: Final answer
    x = 251,810.97

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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.