Home / 538,975.60-808,466.20-139,588.40

Finding the Fourth Proportional to 538,975.60, 808,466.20 and 139,588.40

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Solution

The fourth proportional to 538,975.60, 808,466.20 and 139,588.40 is: 209,383.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,975.60 : 808,466.20 = 139,588.40 : x
  2. Step 2: Convert to fraction form
    538,975.60/808,466.20 = 139,588.40/x
  3. Step 3: Cross multiply
    538,975.60x = 808,466.20 × 139,588.40
  4. Step 4: Simplify right side
    538,975.60x = 112,852,503,312.08
  5. Step 5: Solve for x
    x = 112,852,503,312.08/538,975.60
  6. Step 6: Final answer
    x = 209,383.33

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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.