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Finding the Fourth Proportional to 389,407.88, 537,389.88 and 228,379.07

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Solution

The fourth proportional to 389,407.88, 537,389.88 and 228,379.07 is: 315,167.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,407.88 : 537,389.88 = 228,379.07 : x
  2. Step 2: Convert to fraction form
    389,407.88/537,389.88 = 228,379.07/x
  3. Step 3: Cross multiply
    389,407.88x = 537,389.88 × 228,379.07
  4. Step 4: Simplify right side
    389,407.88x = 122,728,602,365.29
  5. Step 5: Solve for x
    x = 122,728,602,365.29/389,407.88
  6. Step 6: Final answer
    x = 315,167.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.