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Finding the Fourth Proportional to 655,924.60, 983,886.90 and 212,692.60

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Solution

The fourth proportional to 655,924.60, 983,886.90 and 212,692.60 is: 319,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,924.60 : 983,886.90 = 212,692.60 : x
  2. Step 2: Convert to fraction form
    655,924.60/983,886.90 = 212,692.60/x
  3. Step 3: Cross multiply
    655,924.60x = 983,886.90 × 212,692.60
  4. Step 4: Simplify right side
    655,924.60x = 209,265,462,866.94
  5. Step 5: Solve for x
    x = 209,265,462,866.94/655,924.60
  6. Step 6: Final answer
    x = 319,038.90

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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.