Home / 388,882-583,381.32-139,622.32

Finding the Fourth Proportional to 388,882, 583,381.32 and 139,622.32

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Solution

The fourth proportional to 388,882, 583,381.32 and 139,622.32 is: 209,454.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,882 : 583,381.32 = 139,622.32 : x
  2. Step 2: Convert to fraction form
    388,882/583,381.32 = 139,622.32/x
  3. Step 3: Cross multiply
    388,882x = 583,381.32 × 139,622.32
  4. Step 4: Simplify right side
    388,882x = 81,453,053,343.06
  5. Step 5: Solve for x
    x = 81,453,053,343.06/388,882
  6. Step 6: Final answer
    x = 209,454.42

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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.