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Finding the Fourth Proportional to 469,911.60, 648,478.62 and 255,051.66

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Solution

The fourth proportional to 469,911.60, 648,478.62 and 255,051.66 is: 351,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,911.60 : 648,478.62 = 255,051.66 : x
  2. Step 2: Convert to fraction form
    469,911.60/648,478.62 = 255,051.66/x
  3. Step 3: Cross multiply
    469,911.60x = 648,478.62 × 255,051.66
  4. Step 4: Simplify right side
    469,911.60x = 165,395,548,505.51
  5. Step 5: Solve for x
    x = 165,395,548,505.51/469,911.60
  6. Step 6: Final answer
    x = 351,971.62

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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.