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Finding the Fourth Proportional to 406,501.20, 609,508.80 and 248,842.80

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Solution

The fourth proportional to 406,501.20, 609,508.80 and 248,842.80 is: 373,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,501.20 : 609,508.80 = 248,842.80 : x
  2. Step 2: Convert to fraction form
    406,501.20/609,508.80 = 248,842.80/x
  3. Step 3: Cross multiply
    406,501.20x = 609,508.80 × 248,842.80
  4. Step 4: Simplify right side
    406,501.20x = 151,671,876,416.64
  5. Step 5: Solve for x
    x = 151,671,876,416.64/406,501.20
  6. Step 6: Final answer
    x = 373,115.45

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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.