Home / 420,205.20-630,346.92-167,424.72

Finding the Fourth Proportional to 420,205.20, 630,346.92 and 167,424.72

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Solution

The fourth proportional to 420,205.20, 630,346.92 and 167,424.72 is: 251,152.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,205.20 : 630,346.92 = 167,424.72 : x
  2. Step 2: Convert to fraction form
    420,205.20/630,346.92 = 167,424.72/x
  3. Step 3: Cross multiply
    420,205.20x = 630,346.92 × 167,424.72
  4. Step 4: Simplify right side
    420,205.20x = 105,535,656,583.86
  5. Step 5: Solve for x
    x = 105,535,656,583.86/420,205.20
  6. Step 6: Final answer
    x = 251,152.67

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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.