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Finding the Fourth Proportional to 291,008.40, 401,587.56 and 163,684.08

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Solution

The fourth proportional to 291,008.40, 401,587.56 and 163,684.08 is: 225,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,008.40 : 401,587.56 = 163,684.08 : x
  2. Step 2: Convert to fraction form
    291,008.40/401,587.56 = 163,684.08/x
  3. Step 3: Cross multiply
    291,008.40x = 401,587.56 × 163,684.08
  4. Step 4: Simplify right side
    291,008.40x = 65,733,490,298.04
  5. Step 5: Solve for x
    x = 65,733,490,298.04/291,008.40
  6. Step 6: Final answer
    x = 225,881.76

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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.