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Finding the Fourth Proportional to 377,257.32, 520,612.38 and 207,487.80

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Solution

The fourth proportional to 377,257.32, 520,612.38 and 207,487.80 is: 286,331.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,257.32 : 520,612.38 = 207,487.80 : x
  2. Step 2: Convert to fraction form
    377,257.32/520,612.38 = 207,487.80/x
  3. Step 3: Cross multiply
    377,257.32x = 520,612.38 × 207,487.80
  4. Step 4: Simplify right side
    377,257.32x = 108,020,717,378.96
  5. Step 5: Solve for x
    x = 108,020,717,378.96/377,257.32
  6. Step 6: Final answer
    x = 286,331.67

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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.