Home / 212,433.38-318,698.08-70,278.32

Finding the Fourth Proportional to 212,433.38, 318,698.08 and 70,278.32

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Solution

The fourth proportional to 212,433.38, 318,698.08 and 70,278.32 is: 105,433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,433.38 : 318,698.08 = 70,278.32 : x
  2. Step 2: Convert to fraction form
    212,433.38/318,698.08 = 70,278.32/x
  3. Step 3: Cross multiply
    212,433.38x = 318,698.08 × 70,278.32
  4. Step 4: Simplify right side
    212,433.38x = 22,397,565,649.63
  5. Step 5: Solve for x
    x = 22,397,565,649.63/212,433.38
  6. Step 6: Final answer
    x = 105,433.36

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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.