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Finding the Fourth Proportional to 384,087.81, 530,041.23 and 212,005.84

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Solution

The fourth proportional to 384,087.81, 530,041.23 and 212,005.84 is: 292,568.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,087.81 : 530,041.23 = 212,005.84 : x
  2. Step 2: Convert to fraction form
    384,087.81/530,041.23 = 212,005.84/x
  3. Step 3: Cross multiply
    384,087.81x = 530,041.23 × 212,005.84
  4. Step 4: Simplify right side
    384,087.81x = 112,371,836,200.78
  5. Step 5: Solve for x
    x = 112,371,836,200.78/384,087.81
  6. Step 6: Final answer
    x = 292,568.09

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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.