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Finding the Fourth Proportional to 270,521.60, 405,782.40 and 130,246.40

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Solution

The fourth proportional to 270,521.60, 405,782.40 and 130,246.40 is: 195,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,521.60 : 405,782.40 = 130,246.40 : x
  2. Step 2: Convert to fraction form
    270,521.60/405,782.40 = 130,246.40/x
  3. Step 3: Cross multiply
    270,521.60x = 405,782.40 × 130,246.40
  4. Step 4: Simplify right side
    270,521.60x = 52,851,696,783.36
  5. Step 5: Solve for x
    x = 52,851,696,783.36/270,521.60
  6. Step 6: Final answer
    x = 195,369.60

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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.