Home / 280,909,147.23-421,321,148.69-76,453,154.91

Finding the Fourth Proportional to 280,909,147.23, 421,321,148.69 and 76,453,154.91

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Solution

The fourth proportional to 280,909,147.23, 421,321,148.69 and 76,453,154.91 is: 114,668,145.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,909,147.23 : 421,321,148.69 = 76,453,154.91 : x
  2. Step 2: Convert to fraction form
    280,909,147.23/421,321,148.69 = 76,453,154.91/x
  3. Step 3: Cross multiply
    280,909,147.23x = 421,321,148.69 × 76,453,154.91
  4. Step 4: Simplify right side
    280,909,147.23x = 32,211,331,047,273,448
  5. Step 5: Solve for x
    x = 32,211,331,047,273,448/280,909,147.23
  6. Step 6: Final answer
    x = 114,668,145.79

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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.