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Finding the Fourth Proportional to 245,370.30, 368,055.53 and 76,903.69

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Solution

The fourth proportional to 245,370.30, 368,055.53 and 76,903.69 is: 115,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,370.30 : 368,055.53 = 76,903.69 : x
  2. Step 2: Convert to fraction form
    245,370.30/368,055.53 = 76,903.69/x
  3. Step 3: Cross multiply
    245,370.30x = 368,055.53 × 76,903.69
  4. Step 4: Simplify right side
    245,370.30x = 28,304,828,381.91
  5. Step 5: Solve for x
    x = 28,304,828,381.91/245,370.30
  6. Step 6: Final answer
    x = 115,355.56

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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.