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Finding the Fourth Proportional to 228,779.33, 315,714.66 and 128,177.33

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Solution

The fourth proportional to 228,779.33, 315,714.66 and 128,177.33 is: 176,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,779.33 : 315,714.66 = 128,177.33 : x
  2. Step 2: Convert to fraction form
    228,779.33/315,714.66 = 128,177.33/x
  3. Step 3: Cross multiply
    228,779.33x = 315,714.66 × 128,177.33
  4. Step 4: Simplify right side
    228,779.33x = 40,467,460,582.08
  5. Step 5: Solve for x
    x = 40,467,460,582.08/228,779.33
  6. Step 6: Final answer
    x = 176,884.26

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1.5x scale

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.