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Finding the Fourth Proportional to 383,492.62, 530,176.35 and 287,833.24

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Solution

The fourth proportional to 383,492.62, 530,176.35 and 287,833.24 is: 397,927.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,492.62 : 530,176.35 = 287,833.24 : x
  2. Step 2: Convert to fraction form
    383,492.62/530,176.35 = 287,833.24/x
  3. Step 3: Cross multiply
    383,492.62x = 530,176.35 × 287,833.24
  4. Step 4: Simplify right side
    383,492.62x = 152,602,376,591.87
  5. Step 5: Solve for x
    x = 152,602,376,591.87/383,492.62
  6. Step 6: Final answer
    x = 397,927.81

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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.