Home / 289,602.45-434,397.36-79,240.38

Finding the Fourth Proportional to 289,602.45, 434,397.36 and 79,240.38

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Solution

The fourth proportional to 289,602.45, 434,397.36 and 79,240.38 is: 118,858.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,602.45 : 434,397.36 = 79,240.38 : x
  2. Step 2: Convert to fraction form
    289,602.45/434,397.36 = 79,240.38/x
  3. Step 3: Cross multiply
    289,602.45x = 434,397.36 × 79,240.38
  4. Step 4: Simplify right side
    289,602.45x = 34,421,811,877.40
  5. Step 5: Solve for x
    x = 34,421,811,877.40/289,602.45
  6. Step 6: Final answer
    x = 118,858.84

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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.