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Finding the Fourth Proportional to 560,857.74, 773,979.60 and 306,208.93

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Solution

The fourth proportional to 560,857.74, 773,979.60 and 306,208.93 is: 422,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,857.74 : 773,979.60 = 306,208.93 : x
  2. Step 2: Convert to fraction form
    560,857.74/773,979.60 = 306,208.93/x
  3. Step 3: Cross multiply
    560,857.74x = 773,979.60 × 306,208.93
  4. Step 4: Simplify right side
    560,857.74x = 236,999,467,999.19
  5. Step 5: Solve for x
    x = 236,999,467,999.19/560,857.74
  6. Step 6: Final answer
    x = 422,566.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.