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Finding the Fourth Proportional to 371,187.16, 512,239.65 and 201,421.30

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Solution

The fourth proportional to 371,187.16, 512,239.65 and 201,421.30 is: 277,962.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,187.16 : 512,239.65 = 201,421.30 : x
  2. Step 2: Convert to fraction form
    371,187.16/512,239.65 = 201,421.30/x
  3. Step 3: Cross multiply
    371,187.16x = 512,239.65 × 201,421.30
  4. Step 4: Simplify right side
    371,187.16x = 103,175,976,214.55
  5. Step 5: Solve for x
    x = 103,175,976,214.55/371,187.16
  6. Step 6: Final answer
    x = 277,962.14

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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.