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Finding the Fourth Proportional to 245,638.40, 367,582.80 and 170,405.60

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Solution

The fourth proportional to 245,638.40, 367,582.80 and 170,405.60 is: 255,001.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,638.40 : 367,582.80 = 170,405.60 : x
  2. Step 2: Convert to fraction form
    245,638.40/367,582.80 = 170,405.60/x
  3. Step 3: Cross multiply
    245,638.40x = 367,582.80 × 170,405.60
  4. Step 4: Simplify right side
    245,638.40x = 62,638,167,583.68
  5. Step 5: Solve for x
    x = 62,638,167,583.68/245,638.40
  6. Step 6: Final answer
    x = 255,001.53

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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.