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Finding the Fourth Proportional to 371,525.15, 512,704.65 and 210,380.15

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Solution

The fourth proportional to 371,525.15, 512,704.65 and 210,380.15 is: 290,324.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,525.15 : 512,704.65 = 210,380.15 : x
  2. Step 2: Convert to fraction form
    371,525.15/512,704.65 = 210,380.15/x
  3. Step 3: Cross multiply
    371,525.15x = 512,704.65 × 210,380.15
  4. Step 4: Simplify right side
    371,525.15x = 107,862,881,172.70
  5. Step 5: Solve for x
    x = 107,862,881,172.70/371,525.15
  6. Step 6: Final answer
    x = 290,324.57

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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.