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Finding the Fourth Proportional to 342,071.86, 512,890.45 and 300,036.35

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Solution

The fourth proportional to 342,071.86, 512,890.45 and 300,036.35 is: 449,863.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,071.86 : 512,890.45 = 300,036.35 : x
  2. Step 2: Convert to fraction form
    342,071.86/512,890.45 = 300,036.35/x
  3. Step 3: Cross multiply
    342,071.86x = 512,890.45 × 300,036.35
  4. Step 4: Simplify right side
    342,071.86x = 153,885,778,567.86
  5. Step 5: Solve for x
    x = 153,885,778,567.86/342,071.86
  6. Step 6: Final answer
    x = 449,863.89

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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.