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Finding the Fourth Proportional to 371,128.68, 512,155.26 and 201,359.16

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Solution

The fourth proportional to 371,128.68, 512,155.26 and 201,359.16 is: 277,874.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,128.68 : 512,155.26 = 201,359.16 : x
  2. Step 2: Convert to fraction form
    371,128.68/512,155.26 = 201,359.16/x
  3. Step 3: Cross multiply
    371,128.68x = 512,155.26 × 201,359.16
  4. Step 4: Simplify right side
    371,128.68x = 103,127,152,943.18
  5. Step 5: Solve for x
    x = 103,127,152,943.18/371,128.68
  6. Step 6: Final answer
    x = 277,874.38

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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.