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Finding the Fourth Proportional to 272,421.60, 408,632.40 and 154,323.60

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Solution

The fourth proportional to 272,421.60, 408,632.40 and 154,323.60 is: 231,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,421.60 : 408,632.40 = 154,323.60 : x
  2. Step 2: Convert to fraction form
    272,421.60/408,632.40 = 154,323.60/x
  3. Step 3: Cross multiply
    272,421.60x = 408,632.40 × 154,323.60
  4. Step 4: Simplify right side
    272,421.60x = 63,061,623,044.64
  5. Step 5: Solve for x
    x = 63,061,623,044.64/272,421.60
  6. Step 6: Final answer
    x = 231,485.40

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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.