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Finding the Fourth Proportional to 426,565.62, 639,389.16 and 226,684.80

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Solution

The fourth proportional to 426,565.62, 639,389.16 and 226,684.80 is: 339,783.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,565.62 : 639,389.16 = 226,684.80 : x
  2. Step 2: Convert to fraction form
    426,565.62/639,389.16 = 226,684.80/x
  3. Step 3: Cross multiply
    426,565.62x = 639,389.16 × 226,684.80
  4. Step 4: Simplify right side
    426,565.62x = 144,939,803,856.77
  5. Step 5: Solve for x
    x = 144,939,803,856.77/426,565.62
  6. Step 6: Final answer
    x = 339,783.14

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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.