Home / 209,363.14-288,798.12-131,715.34

Finding the Fourth Proportional to 209,363.14, 288,798.12 and 131,715.34

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Solution

The fourth proportional to 209,363.14, 288,798.12 and 131,715.34 is: 181,689.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,363.14 : 288,798.12 = 131,715.34 : x
  2. Step 2: Convert to fraction form
    209,363.14/288,798.12 = 131,715.34/x
  3. Step 3: Cross multiply
    209,363.14x = 288,798.12 × 131,715.34
  4. Step 4: Simplify right side
    209,363.14x = 38,039,142,567.16
  5. Step 5: Solve for x
    x = 38,039,142,567.16/209,363.14
  6. Step 6: Final answer
    x = 181,689.78

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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.