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Finding the Fourth Proportional to 505,858.07, 759,312.66 and 338,547.56

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Solution

The fourth proportional to 505,858.07, 759,312.66 and 338,547.56 is: 508,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,858.07 : 759,312.66 = 338,547.56 : x
  2. Step 2: Convert to fraction form
    505,858.07/759,312.66 = 338,547.56/x
  3. Step 3: Cross multiply
    505,858.07x = 759,312.66 × 338,547.56
  4. Step 4: Simplify right side
    505,858.07x = 257,063,444,523.55
  5. Step 5: Solve for x
    x = 257,063,444,523.55/505,858.07
  6. Step 6: Final answer
    x = 508,173.07

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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.