Home / 338,428.61-507,301.27-212,157.54

Finding the Fourth Proportional to 338,428.61, 507,301.27 and 212,157.54

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Solution

The fourth proportional to 338,428.61, 507,301.27 and 212,157.54 is: 318,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,428.61 : 507,301.27 = 212,157.54 : x
  2. Step 2: Convert to fraction form
    338,428.61/507,301.27 = 212,157.54/x
  3. Step 3: Cross multiply
    338,428.61x = 507,301.27 × 212,157.54
  4. Step 4: Simplify right side
    338,428.61x = 107,627,789,482.08
  5. Step 5: Solve for x
    x = 107,627,789,482.08/338,428.61
  6. Step 6: Final answer
    x = 318,022.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.