Home / 345,746.32-477,161.42-209,814.86

Finding the Fourth Proportional to 345,746.32, 477,161.42 and 209,814.86

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Solution

The fourth proportional to 345,746.32, 477,161.42 and 209,814.86 is: 289,563.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,746.32 : 477,161.42 = 209,814.86 : x
  2. Step 2: Convert to fraction form
    345,746.32/477,161.42 = 209,814.86/x
  3. Step 3: Cross multiply
    345,746.32x = 477,161.42 × 209,814.86
  4. Step 4: Simplify right side
    345,746.32x = 100,115,556,678.53
  5. Step 5: Solve for x
    x = 100,115,556,678.53/345,746.32
  6. Step 6: Final answer
    x = 289,563.62

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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.