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Finding the Fourth Proportional to 247,055.69, 370,579.64 and 78,573.58

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Solution

The fourth proportional to 247,055.69, 370,579.64 and 78,573.58 is: 117,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,055.69 : 370,579.64 = 78,573.58 : x
  2. Step 2: Convert to fraction form
    247,055.69/370,579.64 = 78,573.58/x
  3. Step 3: Cross multiply
    247,055.69x = 370,579.64 × 78,573.58
  4. Step 4: Simplify right side
    247,055.69x = 29,117,767,670.59
  5. Step 5: Solve for x
    x = 29,117,767,670.59/247,055.69
  6. Step 6: Final answer
    x = 117,859.12

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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.