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Finding the Fourth Proportional to 354,075.98, 531,335.40 and 143,713.91

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Solution

The fourth proportional to 354,075.98, 531,335.40 and 143,713.91 is: 215,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,075.98 : 531,335.40 = 143,713.91 : x
  2. Step 2: Convert to fraction form
    354,075.98/531,335.40 = 143,713.91/x
  3. Step 3: Cross multiply
    354,075.98x = 531,335.40 × 143,713.91
  4. Step 4: Simplify right side
    354,075.98x = 76,360,288,644.83
  5. Step 5: Solve for x
    x = 76,360,288,644.83/354,075.98
  6. Step 6: Final answer
    x = 215,660.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.