Home / 402,821.53-555,895.72-221,545.04

Finding the Fourth Proportional to 402,821.53, 555,895.72 and 221,545.04

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Solution

The fourth proportional to 402,821.53, 555,895.72 and 221,545.04 is: 305,733.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,821.53 : 555,895.72 = 221,545.04 : x
  2. Step 2: Convert to fraction form
    402,821.53/555,895.72 = 221,545.04/x
  3. Step 3: Cross multiply
    402,821.53x = 555,895.72 × 221,545.04
  4. Step 4: Simplify right side
    402,821.53x = 123,155,938,415.50
  5. Step 5: Solve for x
    x = 123,155,938,415.50/402,821.53
  6. Step 6: Final answer
    x = 305,733.26

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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.