Home / 305,855.10-458,782.65-211,376.70

Finding the Fourth Proportional to 305,855.10, 458,782.65 and 211,376.70

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Solution

The fourth proportional to 305,855.10, 458,782.65 and 211,376.70 is: 317,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,855.10 : 458,782.65 = 211,376.70 : x
  2. Step 2: Convert to fraction form
    305,855.10/458,782.65 = 211,376.70/x
  3. Step 3: Cross multiply
    305,855.10x = 458,782.65 × 211,376.70
  4. Step 4: Simplify right side
    305,855.10x = 96,975,962,574.26
  5. Step 5: Solve for x
    x = 96,975,962,574.26/305,855.10
  6. Step 6: Final answer
    x = 317,065.05

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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.