Home / 420,148.22-630,251.04-120,605.76

Finding the Fourth Proportional to 420,148.22, 630,251.04 and 120,605.76

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Solution

The fourth proportional to 420,148.22, 630,251.04 and 120,605.76 is: 180,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,148.22 : 630,251.04 = 120,605.76 : x
  2. Step 2: Convert to fraction form
    420,148.22/630,251.04 = 120,605.76/x
  3. Step 3: Cross multiply
    420,148.22x = 630,251.04 × 120,605.76
  4. Step 4: Simplify right side
    420,148.22x = 76,011,905,669.99
  5. Step 5: Solve for x
    x = 76,011,905,669.99/420,148.22
  6. Step 6: Final answer
    x = 180,916.88

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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.