Home / 228,243.08-342,297.70-85,985.72

Finding the Fourth Proportional to 228,243.08, 342,297.70 and 85,985.72

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Solution

The fourth proportional to 228,243.08, 342,297.70 and 85,985.72 is: 128,953.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,243.08 : 342,297.70 = 85,985.72 : x
  2. Step 2: Convert to fraction form
    228,243.08/342,297.70 = 85,985.72/x
  3. Step 3: Cross multiply
    228,243.08x = 342,297.70 × 85,985.72
  4. Step 4: Simplify right side
    228,243.08x = 29,432,714,029.68
  5. Step 5: Solve for x
    x = 29,432,714,029.68/228,243.08
  6. Step 6: Final answer
    x = 128,953.37

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1.5x scale

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.