Home / 357,139.12-492,819.41-211,919.87

Finding the Fourth Proportional to 357,139.12, 492,819.41 and 211,919.87

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Solution

The fourth proportional to 357,139.12, 492,819.41 and 211,919.87 is: 292,430.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,139.12 : 492,819.41 = 211,919.87 : x
  2. Step 2: Convert to fraction form
    357,139.12/492,819.41 = 211,919.87/x
  3. Step 3: Cross multiply
    357,139.12x = 492,819.41 × 211,919.87
  4. Step 4: Simplify right side
    357,139.12x = 104,438,227,062.53
  5. Step 5: Solve for x
    x = 104,438,227,062.53/357,139.12
  6. Step 6: Final answer
    x = 292,430.10

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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.