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Finding the Fourth Proportional to 458,903.36, 688,334.56 and 126,492.48

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Solution

The fourth proportional to 458,903.36, 688,334.56 and 126,492.48 is: 189,733.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,903.36 : 688,334.56 = 126,492.48 : x
  2. Step 2: Convert to fraction form
    458,903.36/688,334.56 = 126,492.48/x
  3. Step 3: Cross multiply
    458,903.36x = 688,334.56 × 126,492.48
  4. Step 4: Simplify right side
    458,903.36x = 87,069,145,564.11
  5. Step 5: Solve for x
    x = 87,069,145,564.11/458,903.36
  6. Step 6: Final answer
    x = 189,733.07

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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.