Home / 438,616.63-657,948.45-139,119.94

Finding the Fourth Proportional to 438,616.63, 657,948.45 and 139,119.94

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Solution

The fourth proportional to 438,616.63, 657,948.45 and 139,119.94 is: 208,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,616.63 : 657,948.45 = 139,119.94 : x
  2. Step 2: Convert to fraction form
    438,616.63/657,948.45 = 139,119.94/x
  3. Step 3: Cross multiply
    438,616.63x = 657,948.45 × 139,119.94
  4. Step 4: Simplify right side
    438,616.63x = 91,533,748,887.09
  5. Step 5: Solve for x
    x = 91,533,748,887.09/438,616.63
  6. Step 6: Final answer
    x = 208,687.37

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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.