Home / 438,389.60-657,584.40-251,247.20

Finding the Fourth Proportional to 438,389.60, 657,584.40 and 251,247.20

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Solution

The fourth proportional to 438,389.60, 657,584.40 and 251,247.20 is: 376,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,389.60 : 657,584.40 = 251,247.20 : x
  2. Step 2: Convert to fraction form
    438,389.60/657,584.40 = 251,247.20/x
  3. Step 3: Cross multiply
    438,389.60x = 657,584.40 × 251,247.20
  4. Step 4: Simplify right side
    438,389.60x = 165,216,239,263.68
  5. Step 5: Solve for x
    x = 165,216,239,263.68/438,389.60
  6. Step 6: Final answer
    x = 376,870.80

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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.