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Finding the Fourth Proportional to 406,260.48, 609,017.49 and 139,957.68

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Solution

The fourth proportional to 406,260.48, 609,017.49 and 139,957.68 is: 209,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,260.48 : 609,017.49 = 139,957.68 : x
  2. Step 2: Convert to fraction form
    406,260.48/609,017.49 = 139,957.68/x
  3. Step 3: Cross multiply
    406,260.48x = 609,017.49 × 139,957.68
  4. Step 4: Simplify right side
    406,260.48x = 85,236,674,979.82
  5. Step 5: Solve for x
    x = 85,236,674,979.82/406,260.48
  6. Step 6: Final answer
    x = 209,807.94

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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.