Home / 212,415.55-318,670.20-70,305.10

Finding the Fourth Proportional to 212,415.55, 318,670.20 and 70,305.10

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Solution

The fourth proportional to 212,415.55, 318,670.20 and 70,305.10 is: 105,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,415.55 : 318,670.20 = 70,305.10 : x
  2. Step 2: Convert to fraction form
    212,415.55/318,670.20 = 70,305.10/x
  3. Step 3: Cross multiply
    212,415.55x = 318,670.20 × 70,305.10
  4. Step 4: Simplify right side
    212,415.55x = 22,404,140,278.02
  5. Step 5: Solve for x
    x = 22,404,140,278.02/212,415.55
  6. Step 6: Final answer
    x = 105,473.16

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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.