Home / 389,140.12-583,434.50-172,880.07

Finding the Fourth Proportional to 389,140.12, 583,434.50 and 172,880.07

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Solution

The fourth proportional to 389,140.12, 583,434.50 and 172,880.07 is: 259,197.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,140.12 : 583,434.50 = 172,880.07 : x
  2. Step 2: Convert to fraction form
    389,140.12/583,434.50 = 172,880.07/x
  3. Step 3: Cross multiply
    389,140.12x = 583,434.50 × 172,880.07
  4. Step 4: Simplify right side
    389,140.12x = 100,864,197,429.95
  5. Step 5: Solve for x
    x = 100,864,197,429.95/389,140.12
  6. Step 6: Final answer
    x = 259,197.63

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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.