Home / 314,928,511.80-472,392,767.70-212,136,012.60

Finding the Fourth Proportional to 314,928,511.80, 472,392,767.70 and 212,136,012.60

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Solution

The fourth proportional to 314,928,511.80, 472,392,767.70 and 212,136,012.60 is: 318,204,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,928,511.80 : 472,392,767.70 = 212,136,012.60 : x
  2. Step 2: Convert to fraction form
    314,928,511.80/472,392,767.70 = 212,136,012.60/x
  3. Step 3: Cross multiply
    314,928,511.80x = 472,392,767.70 × 212,136,012.60
  4. Step 4: Simplify right side
    314,928,511.80x = 100,211,518,120,956,064
  5. Step 5: Solve for x
    x = 100,211,518,120,956,064/314,928,511.80
  6. Step 6: Final answer
    x = 318,204,018.90

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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.