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Finding the Fourth Proportional to 357,437.91, 493,141 and 228,451.88

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Solution

The fourth proportional to 357,437.91, 493,141 and 228,451.88 is: 315,184.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,437.91 : 493,141 = 228,451.88 : x
  2. Step 2: Convert to fraction form
    357,437.91/493,141 = 228,451.88/x
  3. Step 3: Cross multiply
    357,437.91x = 493,141 × 228,451.88
  4. Step 4: Simplify right side
    357,437.91x = 112,658,988,555.08
  5. Step 5: Solve for x
    x = 112,658,988,555.08/357,437.91
  6. Step 6: Final answer
    x = 315,184.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.