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Finding the Fourth Proportional to 360,075.57, 539,762.31 and 143,869.84

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Solution

The fourth proportional to 360,075.57, 539,762.31 and 143,869.84 is: 215,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,075.57 : 539,762.31 = 143,869.84 : x
  2. Step 2: Convert to fraction form
    360,075.57/539,762.31 = 143,869.84/x
  3. Step 3: Cross multiply
    360,075.57x = 539,762.31 × 143,869.84
  4. Step 4: Simplify right side
    360,075.57x = 77,655,517,177.73
  5. Step 5: Solve for x
    x = 77,655,517,177.73/360,075.57
  6. Step 6: Final answer
    x = 215,664.50

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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.