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Finding the Fourth Proportional to 576,731.40, 864,837.90 and 221,627.40

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Solution

The fourth proportional to 576,731.40, 864,837.90 and 221,627.40 is: 332,341.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,731.40 : 864,837.90 = 221,627.40 : x
  2. Step 2: Convert to fraction form
    576,731.40/864,837.90 = 221,627.40/x
  3. Step 3: Cross multiply
    576,731.40x = 864,837.90 × 221,627.40
  4. Step 4: Simplify right side
    576,731.40x = 191,671,775,198.46
  5. Step 5: Solve for x
    x = 191,671,775,198.46/576,731.40
  6. Step 6: Final answer
    x = 332,341.49

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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.