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Finding the Fourth Proportional to 371,689.52, 512,933.56 and 228,543.08

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Solution

The fourth proportional to 371,689.52, 512,933.56 and 228,543.08 is: 315,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,689.52 : 512,933.56 = 228,543.08 : x
  2. Step 2: Convert to fraction form
    371,689.52/512,933.56 = 228,543.08/x
  3. Step 3: Cross multiply
    371,689.52x = 512,933.56 × 228,543.08
  4. Step 4: Simplify right side
    371,689.52x = 117,227,415,637.77
  5. Step 5: Solve for x
    x = 117,227,415,637.77/371,689.52
  6. Step 6: Final answer
    x = 315,390.69

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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.