Home / 438,966.63-658,381.25-139,407.77

Finding the Fourth Proportional to 438,966.63, 658,381.25 and 139,407.77

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Solution

The fourth proportional to 438,966.63, 658,381.25 and 139,407.77 is: 209,089.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,966.63 : 658,381.25 = 139,407.77 : x
  2. Step 2: Convert to fraction form
    438,966.63/658,381.25 = 139,407.77/x
  3. Step 3: Cross multiply
    438,966.63x = 658,381.25 × 139,407.77
  4. Step 4: Simplify right side
    438,966.63x = 91,783,457,883.37
  5. Step 5: Solve for x
    x = 91,783,457,883.37/438,966.63
  6. Step 6: Final answer
    x = 209,089.83

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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.