Home / 289,511.34-434,267.19-79,133.46

Finding the Fourth Proportional to 289,511.34, 434,267.19 and 79,133.46

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Solution

The fourth proportional to 289,511.34, 434,267.19 and 79,133.46 is: 118,700.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,511.34 : 434,267.19 = 79,133.46 : x
  2. Step 2: Convert to fraction form
    289,511.34/434,267.19 = 79,133.46/x
  3. Step 3: Cross multiply
    289,511.34x = 434,267.19 × 79,133.46
  4. Step 4: Simplify right side
    289,511.34x = 34,365,065,309.18
  5. Step 5: Solve for x
    x = 34,365,065,309.18/289,511.34
  6. Step 6: Final answer
    x = 118,700.24

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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.