Home / 289,985.18-434,758.91-190,170.50

Finding the Fourth Proportional to 289,985.18, 434,758.91 and 190,170.50

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Solution

The fourth proportional to 289,985.18, 434,758.91 and 190,170.50 is: 285,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,985.18 : 434,758.91 = 190,170.50 : x
  2. Step 2: Convert to fraction form
    289,985.18/434,758.91 = 190,170.50/x
  3. Step 3: Cross multiply
    289,985.18x = 434,758.91 × 190,170.50
  4. Step 4: Simplify right side
    289,985.18x = 82,678,316,169.51
  5. Step 5: Solve for x
    x = 82,678,316,169.51/289,985.18
  6. Step 6: Final answer
    x = 285,112.22

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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.