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Finding the Fourth Proportional to 469,851.18, 648,505.86 and 278,974.68

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Solution

The fourth proportional to 469,851.18, 648,505.86 and 278,974.68 is: 385,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,851.18 : 648,505.86 = 278,974.68 : x
  2. Step 2: Convert to fraction form
    469,851.18/648,505.86 = 278,974.68/x
  3. Step 3: Cross multiply
    469,851.18x = 648,505.86 × 278,974.68
  4. Step 4: Simplify right side
    469,851.18x = 180,916,714,771.63
  5. Step 5: Solve for x
    x = 180,916,714,771.63/469,851.18
  6. Step 6: Final answer
    x = 385,051.10

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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.