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Finding the Fourth Proportional to 438,401.60, 657,668.10 and 185,681.60

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Solution

The fourth proportional to 438,401.60, 657,668.10 and 185,681.60 is: 278,550.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,401.60 : 657,668.10 = 185,681.60 : x
  2. Step 2: Convert to fraction form
    438,401.60/657,668.10 = 185,681.60/x
  3. Step 3: Cross multiply
    438,401.60x = 657,668.10 × 185,681.60
  4. Step 4: Simplify right side
    438,401.60x = 122,116,865,076.96
  5. Step 5: Solve for x
    x = 122,116,865,076.96/438,401.60
  6. Step 6: Final answer
    x = 278,550.23

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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.