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Finding the Fourth Proportional to 385,561.89, 532,075.35 and 215,796.01

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Solution

The fourth proportional to 385,561.89, 532,075.35 and 215,796.01 is: 297,798.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,561.89 : 532,075.35 = 215,796.01 : x
  2. Step 2: Convert to fraction form
    385,561.89/532,075.35 = 215,796.01/x
  3. Step 3: Cross multiply
    385,561.89x = 532,075.35 × 215,796.01
  4. Step 4: Simplify right side
    385,561.89x = 114,819,736,470.37
  5. Step 5: Solve for x
    x = 114,819,736,470.37/385,561.89
  6. Step 6: Final answer
    x = 297,798.46

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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.