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Finding the Fourth Proportional to 371,858.14, 513,144.56 and 210,715.12

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Solution

The fourth proportional to 371,858.14, 513,144.56 and 210,715.12 is: 290,775.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,858.14 : 513,144.56 = 210,715.12 : x
  2. Step 2: Convert to fraction form
    371,858.14/513,144.56 = 210,715.12/x
  3. Step 3: Cross multiply
    371,858.14x = 513,144.56 × 210,715.12
  4. Step 4: Simplify right side
    371,858.14x = 108,127,317,537.75
  5. Step 5: Solve for x
    x = 108,127,317,537.75/371,858.14
  6. Step 6: Final answer
    x = 290,775.72

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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.