Home / 211,968,015.20-317,952,022.80-210,624,322.40

Finding the Fourth Proportional to 211,968,015.20, 317,952,022.80 and 210,624,322.40

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Solution

The fourth proportional to 211,968,015.20, 317,952,022.80 and 210,624,322.40 is: 315,936,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,968,015.20 : 317,952,022.80 = 210,624,322.40 : x
  2. Step 2: Convert to fraction form
    211,968,015.20/317,952,022.80 = 210,624,322.40/x
  3. Step 3: Cross multiply
    211,968,015.20x = 317,952,022.80 × 210,624,322.40
  4. Step 4: Simplify right side
    211,968,015.20x = 66,968,429,357,959,352
  5. Step 5: Solve for x
    x = 66,968,429,357,959,352/211,968,015.20
  6. Step 6: Final answer
    x = 315,936,483.60

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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.