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Finding the Fourth Proportional to 228,798.61, 342,955.93 and 84,611.77

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Solution

The fourth proportional to 228,798.61, 342,955.93 and 84,611.77 is: 126,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,798.61 : 342,955.93 = 84,611.77 : x
  2. Step 2: Convert to fraction form
    228,798.61/342,955.93 = 84,611.77/x
  3. Step 3: Cross multiply
    228,798.61x = 342,955.93 × 84,611.77
  4. Step 4: Simplify right side
    228,798.61x = 29,018,108,269.30
  5. Step 5: Solve for x
    x = 29,018,108,269.30/228,798.61
  6. Step 6: Final answer
    x = 126,828.17

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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.