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Finding the Fourth Proportional to 379,801.16, 569,701.02 and 143,196.92

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Solution

The fourth proportional to 379,801.16, 569,701.02 and 143,196.92 is: 214,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,801.16 : 569,701.02 = 143,196.92 : x
  2. Step 2: Convert to fraction form
    379,801.16/569,701.02 = 143,196.92/x
  3. Step 3: Cross multiply
    379,801.16x = 569,701.02 × 143,196.92
  4. Step 4: Simplify right side
    379,801.16x = 81,579,431,384.86
  5. Step 5: Solve for x
    x = 81,579,431,384.86/379,801.16
  6. Step 6: Final answer
    x = 214,795.11

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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.