Home / 389,825.60-584,738.40-239,578.70

Finding the Fourth Proportional to 389,825.60, 584,738.40 and 239,578.70

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Solution

The fourth proportional to 389,825.60, 584,738.40 and 239,578.70 is: 359,368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,825.60 : 584,738.40 = 239,578.70 : x
  2. Step 2: Convert to fraction form
    389,825.60/584,738.40 = 239,578.70/x
  3. Step 3: Cross multiply
    389,825.60x = 584,738.40 × 239,578.70
  4. Step 4: Simplify right side
    389,825.60x = 140,090,865,712.08
  5. Step 5: Solve for x
    x = 140,090,865,712.08/389,825.60
  6. Step 6: Final answer
    x = 359,368.05

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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.