Home / 382,984.88-528,439.02-221,830.31

Finding the Fourth Proportional to 382,984.88, 528,439.02 and 221,830.31

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Solution

The fourth proportional to 382,984.88, 528,439.02 and 221,830.31 is: 306,079.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,984.88 : 528,439.02 = 221,830.31 : x
  2. Step 2: Convert to fraction form
    382,984.88/528,439.02 = 221,830.31/x
  3. Step 3: Cross multiply
    382,984.88x = 528,439.02 × 221,830.31
  4. Step 4: Simplify right side
    382,984.88x = 117,223,788,980.50
  5. Step 5: Solve for x
    x = 117,223,788,980.50/382,984.88
  6. Step 6: Final answer
    x = 306,079.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.