Home / 289,272.31-433,895.77-78,909.55

Finding the Fourth Proportional to 289,272.31, 433,895.77 and 78,909.55

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Solution

The fourth proportional to 289,272.31, 433,895.77 and 78,909.55 is: 118,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,272.31 : 433,895.77 = 78,909.55 : x
  2. Step 2: Convert to fraction form
    289,272.31/433,895.77 = 78,909.55/x
  3. Step 3: Cross multiply
    289,272.31x = 433,895.77 × 78,909.55
  4. Step 4: Simplify right side
    289,272.31x = 34,238,519,957.60
  5. Step 5: Solve for x
    x = 34,238,519,957.60/289,272.31
  6. Step 6: Final answer
    x = 118,360.86

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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.