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Finding the Fourth Proportional to 505,030.50, 696,956.67 and 278,690.58

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Solution

The fourth proportional to 505,030.50, 696,956.67 and 278,690.58 is: 384,601.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,030.50 : 696,956.67 = 278,690.58 : x
  2. Step 2: Convert to fraction form
    505,030.50/696,956.67 = 278,690.58/x
  3. Step 3: Cross multiply
    505,030.50x = 696,956.67 × 278,690.58
  4. Step 4: Simplify right side
    505,030.50x = 194,235,258,597.17
  5. Step 5: Solve for x
    x = 194,235,258,597.17/505,030.50
  6. Step 6: Final answer
    x = 384,601.05

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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.