Home / 382,834.68-528,295.02-221,681.40

Finding the Fourth Proportional to 382,834.68, 528,295.02 and 221,681.40

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Solution

The fourth proportional to 382,834.68, 528,295.02 and 221,681.40 is: 305,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,834.68 : 528,295.02 = 221,681.40 : x
  2. Step 2: Convert to fraction form
    382,834.68/528,295.02 = 221,681.40/x
  3. Step 3: Cross multiply
    382,834.68x = 528,295.02 × 221,681.40
  4. Step 4: Simplify right side
    382,834.68x = 117,113,179,646.63
  5. Step 5: Solve for x
    x = 117,113,179,646.63/382,834.68
  6. Step 6: Final answer
    x = 305,910.58

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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.