Home / 384,821.12-531,007.14-212,715.83

Finding the Fourth Proportional to 384,821.12, 531,007.14 and 212,715.83

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Solution

The fourth proportional to 384,821.12, 531,007.14 and 212,715.83 is: 293,522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,821.12 : 531,007.14 = 212,715.83 : x
  2. Step 2: Convert to fraction form
    384,821.12/531,007.14 = 212,715.83/x
  3. Step 3: Cross multiply
    384,821.12x = 531,007.14 × 212,715.83
  4. Step 4: Simplify right side
    384,821.12x = 112,953,624,521.03
  5. Step 5: Solve for x
    x = 112,953,624,521.03/384,821.12
  6. Step 6: Final answer
    x = 293,522.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.