Home / 289,516.48-434,280.76-79,153.12

Finding the Fourth Proportional to 289,516.48, 434,280.76 and 79,153.12

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Solution

The fourth proportional to 289,516.48, 434,280.76 and 79,153.12 is: 118,731.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,516.48 : 434,280.76 = 79,153.12 : x
  2. Step 2: Convert to fraction form
    289,516.48/434,280.76 = 79,153.12/x
  3. Step 3: Cross multiply
    289,516.48x = 434,280.76 × 79,153.12
  4. Step 4: Simplify right side
    289,516.48x = 34,374,677,109.97
  5. Step 5: Solve for x
    x = 34,374,677,109.97/289,516.48
  6. Step 6: Final answer
    x = 118,731.33

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1.5x scale

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.