Home / 389,137.36-583,430.39-172,877.32

Finding the Fourth Proportional to 389,137.36, 583,430.39 and 172,877.32

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Solution

The fourth proportional to 389,137.36, 583,430.39 and 172,877.32 is: 259,193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,137.36 : 583,430.39 = 172,877.32 : x
  2. Step 2: Convert to fraction form
    389,137.36/583,430.39 = 172,877.32/x
  3. Step 3: Cross multiply
    389,137.36x = 583,430.39 × 172,877.32
  4. Step 4: Simplify right side
    389,137.36x = 100,861,879,312.60
  5. Step 5: Solve for x
    x = 100,861,879,312.60/389,137.36
  6. Step 6: Final answer
    x = 259,193.51

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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.