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Finding the Fourth Proportional to 508,736.51, 702,064.61 and 279,314.94

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Solution

The fourth proportional to 508,736.51, 702,064.61 and 279,314.94 is: 385,459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,736.51 : 702,064.61 = 279,314.94 : x
  2. Step 2: Convert to fraction form
    508,736.51/702,064.61 = 279,314.94/x
  3. Step 3: Cross multiply
    508,736.51x = 702,064.61 × 279,314.94
  4. Step 4: Simplify right side
    508,736.51x = 196,097,136,701.87
  5. Step 5: Solve for x
    x = 196,097,136,701.87/508,736.51
  6. Step 6: Final answer
    x = 385,459.14

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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.