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Finding the Fourth Proportional to 272,607.42, 408,907.47 and 70,202.40

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Solution

The fourth proportional to 272,607.42, 408,907.47 and 70,202.40 is: 105,302.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,607.42 : 408,907.47 = 70,202.40 : x
  2. Step 2: Convert to fraction form
    272,607.42/408,907.47 = 70,202.40/x
  3. Step 3: Cross multiply
    272,607.42x = 408,907.47 × 70,202.40
  4. Step 4: Simplify right side
    272,607.42x = 28,706,285,771.93
  5. Step 5: Solve for x
    x = 28,706,285,771.93/272,607.42
  6. Step 6: Final answer
    x = 105,302.66

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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.