Home / 420,113.20-630,209.04-167,332.72

Finding the Fourth Proportional to 420,113.20, 630,209.04 and 167,332.72

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Solution

The fourth proportional to 420,113.20, 630,209.04 and 167,332.72 is: 251,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,113.20 : 630,209.04 = 167,332.72 : x
  2. Step 2: Convert to fraction form
    420,113.20/630,209.04 = 167,332.72/x
  3. Step 3: Cross multiply
    420,113.20x = 630,209.04 × 167,332.72
  4. Step 4: Simplify right side
    420,113.20x = 105,454,592,831.79
  5. Step 5: Solve for x
    x = 105,454,592,831.79/420,113.20
  6. Step 6: Final answer
    x = 251,014.71

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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.