Home / 289,519.02-434,340.90-89,835.48

Finding the Fourth Proportional to 289,519.02, 434,340.90 and 89,835.48

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Solution

The fourth proportional to 289,519.02, 434,340.90 and 89,835.48 is: 134,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,519.02 : 434,340.90 = 89,835.48 : x
  2. Step 2: Convert to fraction form
    289,519.02/434,340.90 = 89,835.48/x
  3. Step 3: Cross multiply
    289,519.02x = 434,340.90 × 89,835.48
  4. Step 4: Simplify right side
    289,519.02x = 39,019,223,235.13
  5. Step 5: Solve for x
    x = 39,019,223,235.13/289,519.02
  6. Step 6: Final answer
    x = 134,772.57

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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.