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Finding the Fourth Proportional to 294,386.60, 406,263.32 and 165,347.78

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Solution

The fourth proportional to 294,386.60, 406,263.32 and 165,347.78 is: 228,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,386.60 : 406,263.32 = 165,347.78 : x
  2. Step 2: Convert to fraction form
    294,386.60/406,263.32 = 165,347.78/x
  3. Step 3: Cross multiply
    294,386.60x = 406,263.32 × 165,347.78
  4. Step 4: Simplify right side
    294,386.60x = 67,174,738,057.43
  5. Step 5: Solve for x
    x = 67,174,738,057.43/294,386.60
  6. Step 6: Final answer
    x = 228,185.45

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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.