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Finding the Fourth Proportional to 291,970,615.62, 437,900,109.03 and 87,498,690.87

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Solution

The fourth proportional to 291,970,615.62, 437,900,109.03 and 87,498,690.87 is: 131,231,309.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,970,615.62 : 437,900,109.03 = 87,498,690.87 : x
  2. Step 2: Convert to fraction form
    291,970,615.62/437,900,109.03 = 87,498,690.87/x
  3. Step 3: Cross multiply
    291,970,615.62x = 437,900,109.03 × 87,498,690.87
  4. Step 4: Simplify right side
    291,970,615.62x = 38,315,686,271,955,264
  5. Step 5: Solve for x
    x = 38,315,686,271,955,264/291,970,615.62
  6. Step 6: Final answer
    x = 131,231,309.67

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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.