Home / 290,781,636.80-436,410,400.80-288,514,155.20

Finding the Fourth Proportional to 290,781,636.80, 436,410,400.80 and 288,514,155.20

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Solution

The fourth proportional to 290,781,636.80, 436,410,400.80 and 288,514,155.20 is: 433,007,322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,781,636.80 : 436,410,400.80 = 288,514,155.20 : x
  2. Step 2: Convert to fraction form
    290,781,636.80/436,410,400.80 = 288,514,155.20/x
  3. Step 3: Cross multiply
    290,781,636.80x = 436,410,400.80 × 288,514,155.20
  4. Step 4: Simplify right side
    290,781,636.80x = 125,910,578,107,305,408
  5. Step 5: Solve for x
    x = 125,910,578,107,305,408/290,781,636.80
  6. Step 6: Final answer
    x = 433,007,322.93

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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.