Home / 212,415.05-318,669.45-70,304.60

Finding the Fourth Proportional to 212,415.05, 318,669.45 and 70,304.60

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Solution

The fourth proportional to 212,415.05, 318,669.45 and 70,304.60 is: 105,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,415.05 : 318,669.45 = 70,304.60 : x
  2. Step 2: Convert to fraction form
    212,415.05/318,669.45 = 70,304.60/x
  3. Step 3: Cross multiply
    212,415.05x = 318,669.45 × 70,304.60
  4. Step 4: Simplify right side
    212,415.05x = 22,403,928,214.47
  5. Step 5: Solve for x
    x = 22,403,928,214.47/212,415.05
  6. Step 6: Final answer
    x = 105,472.41

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1.5x scale

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.