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Finding the Fourth Proportional to 371,129.68, 512,156.64 and 201,360.16

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Solution

The fourth proportional to 371,129.68, 512,156.64 and 201,360.16 is: 277,875.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,129.68 : 512,156.64 = 201,360.16 : x
  2. Step 2: Convert to fraction form
    371,129.68/512,156.64 = 201,360.16/x
  3. Step 3: Cross multiply
    371,129.68x = 512,156.64 × 201,360.16
  4. Step 4: Simplify right side
    371,129.68x = 103,127,942,975.46
  5. Step 5: Solve for x
    x = 103,127,942,975.46/371,129.68
  6. Step 6: Final answer
    x = 277,875.76

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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.