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Finding the Fourth Proportional to 381,603.60, 572,405.40 and 224,139.60

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Solution

The fourth proportional to 381,603.60, 572,405.40 and 224,139.60 is: 336,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,603.60 : 572,405.40 = 224,139.60 : x
  2. Step 2: Convert to fraction form
    381,603.60/572,405.40 = 224,139.60/x
  3. Step 3: Cross multiply
    381,603.60x = 572,405.40 × 224,139.60
  4. Step 4: Simplify right side
    381,603.60x = 128,298,717,393.84
  5. Step 5: Solve for x
    x = 128,298,717,393.84/381,603.60
  6. Step 6: Final answer
    x = 336,209.40

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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.