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Finding the Fourth Proportional to 395,356.93, 545,369.73 and 250,117.63

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Solution

The fourth proportional to 395,356.93, 545,369.73 and 250,117.63 is: 345,021.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,356.93 : 545,369.73 = 250,117.63 : x
  2. Step 2: Convert to fraction form
    395,356.93/545,369.73 = 250,117.63/x
  3. Step 3: Cross multiply
    395,356.93x = 545,369.73 × 250,117.63
  4. Step 4: Simplify right side
    395,356.93x = 136,406,584,341.34
  5. Step 5: Solve for x
    x = 136,406,584,341.34/395,356.93
  6. Step 6: Final answer
    x = 345,021.36

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1.5x scale

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.