Home / 291,216.09-401,811.71-163,845.21

Finding the Fourth Proportional to 291,216.09, 401,811.71 and 163,845.21

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Solution

The fourth proportional to 291,216.09, 401,811.71 and 163,845.21 is: 226,068.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,216.09 : 401,811.71 = 163,845.21 : x
  2. Step 2: Convert to fraction form
    291,216.09/401,811.71 = 163,845.21/x
  3. Step 3: Cross multiply
    291,216.09x = 401,811.71 × 163,845.21
  4. Step 4: Simplify right side
    291,216.09x = 65,834,924,005.41
  5. Step 5: Solve for x
    x = 65,834,924,005.41/291,216.09
  6. Step 6: Final answer
    x = 226,068.98

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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.