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Finding the Fourth Proportional to 525,355.76, 787,955.28 and 146,236.88

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Solution

The fourth proportional to 525,355.76, 787,955.28 and 146,236.88 is: 219,333.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,355.76 : 787,955.28 = 146,236.88 : x
  2. Step 2: Convert to fraction form
    525,355.76/787,955.28 = 146,236.88/x
  3. Step 3: Cross multiply
    525,355.76x = 787,955.28 × 146,236.88
  4. Step 4: Simplify right side
    525,355.76x = 115,228,121,726.73
  5. Step 5: Solve for x
    x = 115,228,121,726.73/525,355.76
  6. Step 6: Final answer
    x = 219,333.51

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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.