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Finding the Fourth Proportional to 223,138.88, 307,577.76 and 218,715.20

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Solution

The fourth proportional to 223,138.88, 307,577.76 and 218,715.20 is: 301,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,138.88 : 307,577.76 = 218,715.20 : x
  2. Step 2: Convert to fraction form
    223,138.88/307,577.76 = 218,715.20/x
  3. Step 3: Cross multiply
    223,138.88x = 307,577.76 × 218,715.20
  4. Step 4: Simplify right side
    223,138.88x = 67,271,931,293.95
  5. Step 5: Solve for x
    x = 67,271,931,293.95/223,138.88
  6. Step 6: Final answer
    x = 301,480.10

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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.