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Finding the Fourth Proportional to 386,053.35, 578,810.03 and 228,200.55

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Solution

The fourth proportional to 386,053.35, 578,810.03 and 228,200.55 is: 342,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,053.35 : 578,810.03 = 228,200.55 : x
  2. Step 2: Convert to fraction form
    386,053.35/578,810.03 = 228,200.55/x
  3. Step 3: Cross multiply
    386,053.35x = 578,810.03 × 228,200.55
  4. Step 4: Simplify right side
    386,053.35x = 132,084,766,050.51
  5. Step 5: Solve for x
    x = 132,084,766,050.51/386,053.35
  6. Step 6: Final answer
    x = 342,141.22

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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.