Home / 459,472.20-689,208.32-143,930.24

Finding the Fourth Proportional to 459,472.20, 689,208.32 and 143,930.24

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Solution

The fourth proportional to 459,472.20, 689,208.32 and 143,930.24 is: 215,895.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,472.20 : 689,208.32 = 143,930.24 : x
  2. Step 2: Convert to fraction form
    459,472.20/689,208.32 = 143,930.24/x
  3. Step 3: Cross multiply
    459,472.20x = 689,208.32 × 143,930.24
  4. Step 4: Simplify right side
    459,472.20x = 99,197,918,907.60
  5. Step 5: Solve for x
    x = 99,197,918,907.60/459,472.20
  6. Step 6: Final answer
    x = 215,895.37

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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.