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Finding the Fourth Proportional to 375,412.20, 518,114.31 and 212,075.61

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Solution

The fourth proportional to 375,412.20, 518,114.31 and 212,075.61 is: 292,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,412.20 : 518,114.31 = 212,075.61 : x
  2. Step 2: Convert to fraction form
    375,412.20/518,114.31 = 212,075.61/x
  3. Step 3: Cross multiply
    375,412.20x = 518,114.31 × 212,075.61
  4. Step 4: Simplify right side
    375,412.20x = 109,879,408,342.98
  5. Step 5: Solve for x
    x = 109,879,408,342.98/375,412.20
  6. Step 6: Final answer
    x = 292,690.03

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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.