Home / 212,568,015.80-318,852,023.70-208,536,937.40

Finding the Fourth Proportional to 212,568,015.80, 318,852,023.70 and 208,536,937.40

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Solution

The fourth proportional to 212,568,015.80, 318,852,023.70 and 208,536,937.40 is: 312,805,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,568,015.80 : 318,852,023.70 = 208,536,937.40 : x
  2. Step 2: Convert to fraction form
    212,568,015.80/318,852,023.70 = 208,536,937.40/x
  3. Step 3: Cross multiply
    212,568,015.80x = 318,852,023.70 × 208,536,937.40
  4. Step 4: Simplify right side
    212,568,015.80x = 66,492,424,506,190,216
  5. Step 5: Solve for x
    x = 66,492,424,506,190,216/212,568,015.80
  6. Step 6: Final answer
    x = 312,805,406.10

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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.