Home / 212,372.21-318,607.63-70,208.91

Finding the Fourth Proportional to 212,372.21, 318,607.63 and 70,208.91

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Solution

The fourth proportional to 212,372.21, 318,607.63 and 70,208.91 is: 105,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,372.21 : 318,607.63 = 70,208.91 : x
  2. Step 2: Convert to fraction form
    212,372.21/318,607.63 = 70,208.91/x
  3. Step 3: Cross multiply
    212,372.21x = 318,607.63 × 70,208.91
  4. Step 4: Simplify right side
    212,372.21x = 22,369,094,244.46
  5. Step 5: Solve for x
    x = 22,369,094,244.46/212,372.21
  6. Step 6: Final answer
    x = 105,329.67

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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.