Home / 353,420.82-487,684.32-210,153.18

Finding the Fourth Proportional to 353,420.82, 487,684.32 and 210,153.18

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Solution

The fourth proportional to 353,420.82, 487,684.32 and 210,153.18 is: 289,989.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,420.82 : 487,684.32 = 210,153.18 : x
  2. Step 2: Convert to fraction form
    353,420.82/487,684.32 = 210,153.18/x
  3. Step 3: Cross multiply
    353,420.82x = 487,684.32 × 210,153.18
  4. Step 4: Simplify right side
    353,420.82x = 102,488,410,684.14
  5. Step 5: Solve for x
    x = 102,488,410,684.14/353,420.82
  6. Step 6: Final answer
    x = 289,989.74

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1.5x scale

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.