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Finding the Fourth Proportional to 245,403.62, 368,094.72 and 76,920.10

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Solution

The fourth proportional to 245,403.62, 368,094.72 and 76,920.10 is: 115,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,403.62 : 368,094.72 = 76,920.10 : x
  2. Step 2: Convert to fraction form
    245,403.62/368,094.72 = 76,920.10/x
  3. Step 3: Cross multiply
    245,403.62x = 368,094.72 × 76,920.10
  4. Step 4: Simplify right side
    245,403.62x = 28,313,881,463.18
  5. Step 5: Solve for x
    x = 28,313,881,463.18/245,403.62
  6. Step 6: Final answer
    x = 115,376.79

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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.