Home / 384,140.55-530,143.34-212,091.69

Finding the Fourth Proportional to 384,140.55, 530,143.34 and 212,091.69

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Solution

The fourth proportional to 384,140.55, 530,143.34 and 212,091.69 is: 292,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,140.55 : 530,143.34 = 212,091.69 : x
  2. Step 2: Convert to fraction form
    384,140.55/530,143.34 = 212,091.69/x
  3. Step 3: Cross multiply
    384,140.55x = 530,143.34 × 212,091.69
  4. Step 4: Simplify right side
    384,140.55x = 112,438,995,862.39
  5. Step 5: Solve for x
    x = 112,438,995,862.39/384,140.55
  6. Step 6: Final answer
    x = 292,702.75

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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.