Home / 353,140.21-487,329.91-262,899.73

Finding the Fourth Proportional to 353,140.21, 487,329.91 and 262,899.73

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Solution

The fourth proportional to 353,140.21, 487,329.91 and 262,899.73 is: 362,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,140.21 : 487,329.91 = 262,899.73 : x
  2. Step 2: Convert to fraction form
    353,140.21/487,329.91 = 262,899.73/x
  3. Step 3: Cross multiply
    353,140.21x = 487,329.91 × 262,899.73
  4. Step 4: Simplify right side
    353,140.21x = 128,118,901,759.92
  5. Step 5: Solve for x
    x = 128,118,901,759.92/353,140.21
  6. Step 6: Final answer
    x = 362,798.96

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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.