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Finding the Fourth Proportional to 342,073.86, 512,893.45 and 300,038.35

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Solution

The fourth proportional to 342,073.86, 512,893.45 and 300,038.35 is: 449,866.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,073.86 : 512,893.45 = 300,038.35 : x
  2. Step 2: Convert to fraction form
    342,073.86/512,893.45 = 300,038.35/x
  3. Step 3: Cross multiply
    342,073.86x = 512,893.45 × 300,038.35
  4. Step 4: Simplify right side
    342,073.86x = 153,887,704,463.81
  5. Step 5: Solve for x
    x = 153,887,704,463.81/342,073.86
  6. Step 6: Final answer
    x = 449,866.89

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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.