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Finding the Fourth Proportional to 543,506.92, 815,312.22 and 211,108.84

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Solution

The fourth proportional to 543,506.92, 815,312.22 and 211,108.84 is: 316,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,506.92 : 815,312.22 = 211,108.84 : x
  2. Step 2: Convert to fraction form
    543,506.92/815,312.22 = 211,108.84/x
  3. Step 3: Cross multiply
    543,506.92x = 815,312.22 × 211,108.84
  4. Step 4: Simplify right side
    543,506.92x = 172,119,617,002.03
  5. Step 5: Solve for x
    x = 172,119,617,002.03/543,506.92
  6. Step 6: Final answer
    x = 316,683.40

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1.5x scale

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.