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Finding the Fourth Proportional to 371,430.72, 512,578.08 and 201,666.24

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Solution

The fourth proportional to 371,430.72, 512,578.08 and 201,666.24 is: 278,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,430.72 : 512,578.08 = 201,666.24 : x
  2. Step 2: Convert to fraction form
    371,430.72/512,578.08 = 201,666.24/x
  3. Step 3: Cross multiply
    371,430.72x = 512,578.08 × 201,666.24
  4. Step 4: Simplify right side
    371,430.72x = 103,369,694,100.02
  5. Step 5: Solve for x
    x = 103,369,694,100.02/371,430.72
  6. Step 6: Final answer
    x = 278,301.41

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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.