Home / 405,913.20-608,869.80-125,516.40

Finding the Fourth Proportional to 405,913.20, 608,869.80 and 125,516.40

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Solution

The fourth proportional to 405,913.20, 608,869.80 and 125,516.40 is: 188,274.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,913.20 : 608,869.80 = 125,516.40 : x
  2. Step 2: Convert to fraction form
    405,913.20/608,869.80 = 125,516.40/x
  3. Step 3: Cross multiply
    405,913.20x = 608,869.80 × 125,516.40
  4. Step 4: Simplify right side
    405,913.20x = 76,423,145,364.72
  5. Step 5: Solve for x
    x = 76,423,145,364.72/405,913.20
  6. Step 6: Final answer
    x = 188,274.60

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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.