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Finding the Fourth Proportional to 292,628.72, 403,860.45 and 165,312.51

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Solution

The fourth proportional to 292,628.72, 403,860.45 and 165,312.51 is: 228,149.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,628.72 : 403,860.45 = 165,312.51 : x
  2. Step 2: Convert to fraction form
    292,628.72/403,860.45 = 165,312.51/x
  3. Step 3: Cross multiply
    292,628.72x = 403,860.45 × 165,312.51
  4. Step 4: Simplify right side
    292,628.72x = 66,763,186,813.63
  5. Step 5: Solve for x
    x = 66,763,186,813.63/292,628.72
  6. Step 6: Final answer
    x = 228,149.81

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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.