Home / 305,345.21-458,281.33-211,916.57

Finding the Fourth Proportional to 305,345.21, 458,281.33 and 211,916.57

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Solution

The fourth proportional to 305,345.21, 458,281.33 and 211,916.57 is: 318,057.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,345.21 : 458,281.33 = 211,916.57 : x
  2. Step 2: Convert to fraction form
    305,345.21/458,281.33 = 211,916.57/x
  3. Step 3: Cross multiply
    305,345.21x = 458,281.33 × 211,916.57
  4. Step 4: Simplify right side
    305,345.21x = 97,117,407,548.64
  5. Step 5: Solve for x
    x = 97,117,407,548.64/305,345.21
  6. Step 6: Final answer
    x = 318,057.74

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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.