Home / 292,821.60-438,973.20-261,328.80

Finding the Fourth Proportional to 292,821.60, 438,973.20 and 261,328.80

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Solution

The fourth proportional to 292,821.60, 438,973.20 and 261,328.80 is: 391,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,821.60 : 438,973.20 = 261,328.80 : x
  2. Step 2: Convert to fraction form
    292,821.60/438,973.20 = 261,328.80/x
  3. Step 3: Cross multiply
    292,821.60x = 438,973.20 × 261,328.80
  4. Step 4: Simplify right side
    292,821.60x = 114,716,339,588.16
  5. Step 5: Solve for x
    x = 114,716,339,588.16/292,821.60
  6. Step 6: Final answer
    x = 391,761.88

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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.