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Finding the Fourth Proportional to 384,021.20, 576,031.80 and 362,248.40

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Solution

The fourth proportional to 384,021.20, 576,031.80 and 362,248.40 is: 543,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,021.20 : 576,031.80 = 362,248.40 : x
  2. Step 2: Convert to fraction form
    384,021.20/576,031.80 = 362,248.40/x
  3. Step 3: Cross multiply
    384,021.20x = 576,031.80 × 362,248.40
  4. Step 4: Simplify right side
    384,021.20x = 208,666,597,899.12
  5. Step 5: Solve for x
    x = 208,666,597,899.12/384,021.20
  6. Step 6: Final answer
    x = 543,372.60

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1.5x scale

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.