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Finding the Fourth Proportional to 291,045.50, 401,582.30 and 170,163.39

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Solution

The fourth proportional to 291,045.50, 401,582.30 and 170,163.39 is: 234,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,045.50 : 401,582.30 = 170,163.39 : x
  2. Step 2: Convert to fraction form
    291,045.50/401,582.30 = 170,163.39/x
  3. Step 3: Cross multiply
    291,045.50x = 401,582.30 × 170,163.39
  4. Step 4: Simplify right side
    291,045.50x = 68,334,604,681.18
  5. Step 5: Solve for x
    x = 68,334,604,681.18/291,045.50
  6. Step 6: Final answer
    x = 234,790.11

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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.