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Finding the Fourth Proportional to 879,807.88, 1,319,700.30 and 214,965.64

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Solution

The fourth proportional to 879,807.88, 1,319,700.30 and 214,965.64 is: 322,445.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,807.88 : 1,319,700.30 = 214,965.64 : x
  2. Step 2: Convert to fraction form
    879,807.88/1,319,700.30 = 214,965.64/x
  3. Step 3: Cross multiply
    879,807.88x = 1,319,700.30 × 214,965.64
  4. Step 4: Simplify right side
    879,807.88x = 283,690,219,597.69
  5. Step 5: Solve for x
    x = 283,690,219,597.69/879,807.88
  6. Step 6: Final answer
    x = 322,445.65

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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.