Home / 384,432.75-530,515.08-212,362.55

Finding the Fourth Proportional to 384,432.75, 530,515.08 and 212,362.55

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Solution

The fourth proportional to 384,432.75, 530,515.08 and 212,362.55 is: 293,059.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,432.75 : 530,515.08 = 212,362.55 : x
  2. Step 2: Convert to fraction form
    384,432.75/530,515.08 = 212,362.55/x
  3. Step 3: Cross multiply
    384,432.75x = 530,515.08 × 212,362.55
  4. Step 4: Simplify right side
    384,432.75x = 112,661,534,240.48
  5. Step 5: Solve for x
    x = 112,661,534,240.48/384,432.75
  6. Step 6: Final answer
    x = 293,059.15

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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.