Home / 210,815.60-315,567.30-121,804.70

Finding the Fourth Proportional to 210,815.60, 315,567.30 and 121,804.70

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Solution

The fourth proportional to 210,815.60, 315,567.30 and 121,804.70 is: 182,327.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,815.60 : 315,567.30 = 121,804.70 : x
  2. Step 2: Convert to fraction form
    210,815.60/315,567.30 = 121,804.70/x
  3. Step 3: Cross multiply
    210,815.60x = 315,567.30 × 121,804.70
  4. Step 4: Simplify right side
    210,815.60x = 38,437,580,306.31
  5. Step 5: Solve for x
    x = 38,437,580,306.31/210,815.60
  6. Step 6: Final answer
    x = 182,327.97

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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.