Home / 290,018,117.70-435,027,176.55-278,680,709.70

Finding the Fourth Proportional to 290,018,117.70, 435,027,176.55 and 278,680,709.70

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Solution

The fourth proportional to 290,018,117.70, 435,027,176.55 and 278,680,709.70 is: 418,021,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,018,117.70 : 435,027,176.55 = 278,680,709.70 : x
  2. Step 2: Convert to fraction form
    290,018,117.70/435,027,176.55 = 278,680,709.70/x
  3. Step 3: Cross multiply
    290,018,117.70x = 435,027,176.55 × 278,680,709.70
  4. Step 4: Simplify right side
    290,018,117.70x = 121,233,682,299,741,200
  5. Step 5: Solve for x
    x = 121,233,682,299,741,200/290,018,117.70
  6. Step 6: Final answer
    x = 418,021,064.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.