Home / 403,128.33-556,303.14-221,823.29

Finding the Fourth Proportional to 403,128.33, 556,303.14 and 221,823.29

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Solution

The fourth proportional to 403,128.33, 556,303.14 and 221,823.29 is: 306,108.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,128.33 : 556,303.14 = 221,823.29 : x
  2. Step 2: Convert to fraction form
    403,128.33/556,303.14 = 221,823.29/x
  3. Step 3: Cross multiply
    403,128.33x = 556,303.14 × 221,823.29
  4. Step 4: Simplify right side
    403,128.33x = 123,400,994,142.89
  5. Step 5: Solve for x
    x = 123,400,994,142.89/403,128.33
  6. Step 6: Final answer
    x = 306,108.47

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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.