Home / 212,814.72-318,658.83-128,462.13

Finding the Fourth Proportional to 212,814.72, 318,658.83 and 128,462.13

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Solution

The fourth proportional to 212,814.72, 318,658.83 and 128,462.13 is: 192,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,814.72 : 318,658.83 = 128,462.13 : x
  2. Step 2: Convert to fraction form
    212,814.72/318,658.83 = 128,462.13/x
  3. Step 3: Cross multiply
    212,814.72x = 318,658.83 × 128,462.13
  4. Step 4: Simplify right side
    212,814.72x = 40,935,592,045.11
  5. Step 5: Solve for x
    x = 40,935,592,045.11/212,814.72
  6. Step 6: Final answer
    x = 192,353.20

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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.