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Finding the Fourth Proportional to 245,369.86, 368,054.91 and 76,903.30

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Solution

The fourth proportional to 245,369.86, 368,054.91 and 76,903.30 is: 115,354.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,369.86 : 368,054.91 = 76,903.30 : x
  2. Step 2: Convert to fraction form
    245,369.86/368,054.91 = 76,903.30/x
  3. Step 3: Cross multiply
    245,369.86x = 368,054.91 × 76,903.30
  4. Step 4: Simplify right side
    245,369.86x = 28,304,637,160.20
  5. Step 5: Solve for x
    x = 28,304,637,160.20/245,369.86
  6. Step 6: Final answer
    x = 115,354.99

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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.