Home / 311,360,289-429,605,914.32-185,888,065.20

Finding the Fourth Proportional to 311,360,289, 429,605,914.32 and 185,888,065.20

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Solution

The fourth proportional to 311,360,289, 429,605,914.32 and 185,888,065.20 is: 256,482,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,360,289 : 429,605,914.32 = 185,888,065.20 : x
  2. Step 2: Convert to fraction form
    311,360,289/429,605,914.32 = 185,888,065.20/x
  3. Step 3: Cross multiply
    311,360,289x = 429,605,914.32 × 185,888,065.20
  4. Step 4: Simplify right side
    311,360,289x = 79,858,612,211,421,760
  5. Step 5: Solve for x
    x = 79,858,612,211,421,760/311,360,289
  6. Step 6: Final answer
    x = 256,482,971.76

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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.