Home / 389,660.10-584,490.15-239,413.20

Finding the Fourth Proportional to 389,660.10, 584,490.15 and 239,413.20

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Solution

The fourth proportional to 389,660.10, 584,490.15 and 239,413.20 is: 359,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,660.10 : 584,490.15 = 239,413.20 : x
  2. Step 2: Convert to fraction form
    389,660.10/584,490.15 = 239,413.20/x
  3. Step 3: Cross multiply
    389,660.10x = 584,490.15 × 239,413.20
  4. Step 4: Simplify right side
    389,660.10x = 139,934,657,179.98
  5. Step 5: Solve for x
    x = 139,934,657,179.98/389,660.10
  6. Step 6: Final answer
    x = 359,119.80

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Similar ratio
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1.5x scale

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.