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Finding the Fourth Proportional to 319,012.40, 477,928.20 and 185,956.40

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Solution

The fourth proportional to 319,012.40, 477,928.20 and 185,956.40 is: 278,590.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,012.40 : 477,928.20 = 185,956.40 : x
  2. Step 2: Convert to fraction form
    319,012.40/477,928.20 = 185,956.40/x
  3. Step 3: Cross multiply
    319,012.40x = 477,928.20 × 185,956.40
  4. Step 4: Simplify right side
    319,012.40x = 88,873,807,530.48
  5. Step 5: Solve for x
    x = 88,873,807,530.48/319,012.40
  6. Step 6: Final answer
    x = 278,590.45

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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.