Home / 442,156.14-609,742-280,730.94

Finding the Fourth Proportional to 442,156.14, 609,742 and 280,730.94

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Solution

The fourth proportional to 442,156.14, 609,742 and 280,730.94 is: 387,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,156.14 : 609,742 = 280,730.94 : x
  2. Step 2: Convert to fraction form
    442,156.14/609,742 = 280,730.94/x
  3. Step 3: Cross multiply
    442,156.14x = 609,742 × 280,730.94
  4. Step 4: Simplify right side
    442,156.14x = 171,173,444,817.48
  5. Step 5: Solve for x
    x = 171,173,444,817.48/442,156.14
  6. Step 6: Final answer
    x = 387,133.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.