Home / 212,400.84-318,525.38-70,219.86

Finding the Fourth Proportional to 212,400.84, 318,525.38 and 70,219.86

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Solution

The fourth proportional to 212,400.84, 318,525.38 and 70,219.86 is: 105,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,400.84 : 318,525.38 = 70,219.86 : x
  2. Step 2: Convert to fraction form
    212,400.84/318,525.38 = 70,219.86/x
  3. Step 3: Cross multiply
    212,400.84x = 318,525.38 × 70,219.86
  4. Step 4: Simplify right side
    212,400.84x = 22,366,807,590.05
  5. Step 5: Solve for x
    x = 22,366,807,590.05/212,400.84
  6. Step 6: Final answer
    x = 105,304.70

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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.