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Finding the Fourth Proportional to 406,271.43, 609,460.47 and 139,960.44

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Solution

The fourth proportional to 406,271.43, 609,460.47 and 139,960.44 is: 209,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,271.43 : 609,460.47 = 139,960.44 : x
  2. Step 2: Convert to fraction form
    406,271.43/609,460.47 = 139,960.44/x
  3. Step 3: Cross multiply
    406,271.43x = 609,460.47 × 139,960.44
  4. Step 4: Simplify right side
    406,271.43x = 85,300,355,543.81
  5. Step 5: Solve for x
    x = 85,300,355,543.81/406,271.43
  6. Step 6: Final answer
    x = 209,959.03

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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.