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Finding the Fourth Proportional to 312,165.33, 430,789.28 and 168,925.35

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Solution

The fourth proportional to 312,165.33, 430,789.28 and 168,925.35 is: 233,117.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,165.33 : 430,789.28 = 168,925.35 : x
  2. Step 2: Convert to fraction form
    312,165.33/430,789.28 = 168,925.35/x
  3. Step 3: Cross multiply
    312,165.33x = 430,789.28 × 168,925.35
  4. Step 4: Simplify right side
    312,165.33x = 72,771,229,900.25
  5. Step 5: Solve for x
    x = 72,771,229,900.25/312,165.33
  6. Step 6: Final answer
    x = 233,117.59

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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.