Home / 402,965.73-556,075.15-221,666.15

Finding the Fourth Proportional to 402,965.73, 556,075.15 and 221,666.15

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Solution

The fourth proportional to 402,965.73, 556,075.15 and 221,666.15 is: 305,889.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,965.73 : 556,075.15 = 221,666.15 : x
  2. Step 2: Convert to fraction form
    402,965.73/556,075.15 = 221,666.15/x
  3. Step 3: Cross multiply
    402,965.73x = 556,075.15 × 221,666.15
  4. Step 4: Simplify right side
    402,965.73x = 123,263,038,447.20
  5. Step 5: Solve for x
    x = 123,263,038,447.20/402,965.73
  6. Step 6: Final answer
    x = 305,889.63

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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.