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Finding the Fourth Proportional to 571,101.25, 788,120.57 and 312,937.16

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Solution

The fourth proportional to 571,101.25, 788,120.57 and 312,937.16 is: 431,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,101.25 : 788,120.57 = 312,937.16 : x
  2. Step 2: Convert to fraction form
    571,101.25/788,120.57 = 312,937.16/x
  3. Step 3: Cross multiply
    571,101.25x = 788,120.57 × 312,937.16
  4. Step 4: Simplify right side
    571,101.25x = 246,632,212,913.38
  5. Step 5: Solve for x
    x = 246,632,212,913.38/571,101.25
  6. Step 6: Final answer
    x = 431,853.74

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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.