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Finding the Fourth Proportional to 228,577.79, 342,889.24 and 78,798.36

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Solution

The fourth proportional to 228,577.79, 342,889.24 and 78,798.36 is: 118,205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,577.79 : 342,889.24 = 78,798.36 : x
  2. Step 2: Convert to fraction form
    228,577.79/342,889.24 = 78,798.36/x
  3. Step 3: Cross multiply
    228,577.79x = 342,889.24 × 78,798.36
  4. Step 4: Simplify right side
    228,577.79x = 27,019,111,157.98
  5. Step 5: Solve for x
    x = 27,019,111,157.98/228,577.79
  6. Step 6: Final answer
    x = 118,205.32

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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.