Home / 388,640,850.96-583,063,480.80-139,671,240.24

Finding the Fourth Proportional to 388,640,850.96, 583,063,480.80 and 139,671,240.24

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Solution

The fourth proportional to 388,640,850.96, 583,063,480.80 and 139,671,240.24 is: 209,543,590.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,640,850.96 : 583,063,480.80 = 139,671,240.24 : x
  2. Step 2: Convert to fraction form
    388,640,850.96/583,063,480.80 = 139,671,240.24/x
  3. Step 3: Cross multiply
    388,640,850.96x = 583,063,480.80 × 139,671,240.24
  4. Step 4: Simplify right side
    388,640,850.96x = 81,437,199,501,987,424
  5. Step 5: Solve for x
    x = 81,437,199,501,987,424/388,640,850.96
  6. Step 6: Final answer
    x = 209,543,590.96

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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.