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Finding the Fourth Proportional to 395,075.05, 545,108.69 and 240,023.23

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Solution

The fourth proportional to 395,075.05, 545,108.69 and 240,023.23 is: 331,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,075.05 : 545,108.69 = 240,023.23 : x
  2. Step 2: Convert to fraction form
    395,075.05/545,108.69 = 240,023.23/x
  3. Step 3: Cross multiply
    395,075.05x = 545,108.69 × 240,023.23
  4. Step 4: Simplify right side
    395,075.05x = 130,838,747,712.16
  5. Step 5: Solve for x
    x = 130,838,747,712.16/395,075.05
  6. Step 6: Final answer
    x = 331,174.41

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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.