Home / 261,243.06-391,975.53-142,776

Finding the Fourth Proportional to 261,243.06, 391,975.53 and 142,776

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Solution

The fourth proportional to 261,243.06, 391,975.53 and 142,776 is: 214,224.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,243.06 : 391,975.53 = 142,776 : x
  2. Step 2: Convert to fraction form
    261,243.06/391,975.53 = 142,776/x
  3. Step 3: Cross multiply
    261,243.06x = 391,975.53 × 142,776
  4. Step 4: Simplify right side
    261,243.06x = 55,964,698,271.28
  5. Step 5: Solve for x
    x = 55,964,698,271.28/261,243.06
  6. Step 6: Final answer
    x = 214,224.63

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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.