Home / 311,083.04-429,427.29-209,167.57

Finding the Fourth Proportional to 311,083.04, 429,427.29 and 209,167.57

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Solution

The fourth proportional to 311,083.04, 429,427.29 and 209,167.57 is: 288,740.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,083.04 : 429,427.29 = 209,167.57 : x
  2. Step 2: Convert to fraction form
    311,083.04/429,427.29 = 209,167.57/x
  3. Step 3: Cross multiply
    311,083.04x = 429,427.29 × 209,167.57
  4. Step 4: Simplify right side
    311,083.04x = 89,822,263,628.74
  5. Step 5: Solve for x
    x = 89,822,263,628.74/311,083.04
  6. Step 6: Final answer
    x = 288,740.47

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1.5x scale

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.