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Finding the Fourth Proportional to 478,551.51, 660,395.72 and 271,818.45

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Solution

The fourth proportional to 478,551.51, 660,395.72 and 271,818.45 is: 375,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,551.51 : 660,395.72 = 271,818.45 : x
  2. Step 2: Convert to fraction form
    478,551.51/660,395.72 = 271,818.45/x
  3. Step 3: Cross multiply
    478,551.51x = 660,395.72 × 271,818.45
  4. Step 4: Simplify right side
    478,551.51x = 179,507,741,676.58
  5. Step 5: Solve for x
    x = 179,507,741,676.58/478,551.51
  6. Step 6: Final answer
    x = 375,106.42

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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.