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Finding the Fourth Proportional to 245,365.86, 368,048.92 and 76,899.31

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Solution

The fourth proportional to 245,365.86, 368,048.92 and 76,899.31 is: 115,349.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,365.86 : 368,048.92 = 76,899.31 : x
  2. Step 2: Convert to fraction form
    245,365.86/368,048.92 = 76,899.31/x
  3. Step 3: Cross multiply
    245,365.86x = 368,048.92 × 76,899.31
  4. Step 4: Simplify right side
    245,365.86x = 28,302,705,938.81
  5. Step 5: Solve for x
    x = 28,302,705,938.81/245,365.86
  6. Step 6: Final answer
    x = 115,349.00

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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.