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Finding the Fourth Proportional to 571,151.88, 788,194.31 and 316,507.32

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Solution

The fourth proportional to 571,151.88, 788,194.31 and 316,507.32 is: 436,782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,151.88 : 788,194.31 = 316,507.32 : x
  2. Step 2: Convert to fraction form
    571,151.88/788,194.31 = 316,507.32/x
  3. Step 3: Cross multiply
    571,151.88x = 788,194.31 × 316,507.32
  4. Step 4: Simplify right side
    571,151.88x = 249,469,267,114.81
  5. Step 5: Solve for x
    x = 249,469,267,114.81/571,151.88
  6. Step 6: Final answer
    x = 436,782.71

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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.