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Finding the Fourth Proportional to 371,186.90, 512,239.32 and 201,421.02

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Solution

The fourth proportional to 371,186.90, 512,239.32 and 201,421.02 is: 277,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,186.90 : 512,239.32 = 201,421.02 : x
  2. Step 2: Convert to fraction form
    371,186.90/512,239.32 = 201,421.02/x
  3. Step 3: Cross multiply
    371,186.90x = 512,239.32 × 201,421.02
  4. Step 4: Simplify right side
    371,186.90x = 103,175,766,318.51
  5. Step 5: Solve for x
    x = 103,175,766,318.51/371,186.90
  6. Step 6: Final answer
    x = 277,961.77

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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.