Home / 309,986,507.67-464,979,762.19-128,233,685.67

Finding the Fourth Proportional to 309,986,507.67, 464,979,762.19 and 128,233,685.67

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Solution

The fourth proportional to 309,986,507.67, 464,979,762.19 and 128,233,685.67 is: 192,350,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,986,507.67 : 464,979,762.19 = 128,233,685.67 : x
  2. Step 2: Convert to fraction form
    309,986,507.67/464,979,762.19 = 128,233,685.67/x
  3. Step 3: Cross multiply
    309,986,507.67x = 464,979,762.19 × 128,233,685.67
  4. Step 4: Simplify right side
    309,986,507.67x = 59,626,068,668,618,272
  5. Step 5: Solve for x
    x = 59,626,068,668,618,272/309,986,507.67
  6. Step 6: Final answer
    x = 192,350,528.79

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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.