Home / 309,962.68-427,762.70-172,142.24

Finding the Fourth Proportional to 309,962.68, 427,762.70 and 172,142.24

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Solution

The fourth proportional to 309,962.68, 427,762.70 and 172,142.24 is: 237,564.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,962.68 : 427,762.70 = 172,142.24 : x
  2. Step 2: Convert to fraction form
    309,962.68/427,762.70 = 172,142.24/x
  3. Step 3: Cross multiply
    309,962.68x = 427,762.70 × 172,142.24
  4. Step 4: Simplify right side
    309,962.68x = 73,636,027,657.99
  5. Step 5: Solve for x
    x = 73,636,027,657.99/309,962.68
  6. Step 6: Final answer
    x = 237,564.17

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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.