Home / 272,714.40-409,094.64-85,779.36

Finding the Fourth Proportional to 272,714.40, 409,094.64 and 85,779.36

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Solution

The fourth proportional to 272,714.40, 409,094.64 and 85,779.36 is: 128,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,714.40 : 409,094.64 = 85,779.36 : x
  2. Step 2: Convert to fraction form
    272,714.40/409,094.64 = 85,779.36/x
  3. Step 3: Cross multiply
    272,714.40x = 409,094.64 × 85,779.36
  4. Step 4: Simplify right side
    272,714.40x = 35,091,876,398.63
  5. Step 5: Solve for x
    x = 35,091,876,398.63/272,714.40
  6. Step 6: Final answer
    x = 128,676.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.