Home / 289,541.16-434,205-99,953.28

Finding the Fourth Proportional to 289,541.16, 434,205 and 99,953.28

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Solution

The fourth proportional to 289,541.16, 434,205 and 99,953.28 is: 149,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,541.16 : 434,205 = 99,953.28 : x
  2. Step 2: Convert to fraction form
    289,541.16/434,205 = 99,953.28/x
  3. Step 3: Cross multiply
    289,541.16x = 434,205 × 99,953.28
  4. Step 4: Simplify right side
    289,541.16x = 43,400,213,942.40
  5. Step 5: Solve for x
    x = 43,400,213,942.40/289,541.16
  6. Step 6: Final answer
    x = 149,893.07

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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.