Home / 376,918.22-520,159.66-221,841.40

Finding the Fourth Proportional to 376,918.22, 520,159.66 and 221,841.40

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Solution

The fourth proportional to 376,918.22, 520,159.66 and 221,841.40 is: 306,148.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,918.22 : 520,159.66 = 221,841.40 : x
  2. Step 2: Convert to fraction form
    376,918.22/520,159.66 = 221,841.40/x
  3. Step 3: Cross multiply
    376,918.22x = 520,159.66 × 221,841.40
  4. Step 4: Simplify right side
    376,918.22x = 115,392,947,254.11
  5. Step 5: Solve for x
    x = 115,392,947,254.11/376,918.22
  6. Step 6: Final answer
    x = 306,148.50

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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.