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Finding the Fourth Proportional to 357,077.85, 535,619.81 and 90,838.59

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Solution

The fourth proportional to 357,077.85, 535,619.81 and 90,838.59 is: 136,258.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,077.85 : 535,619.81 = 90,838.59 : x
  2. Step 2: Convert to fraction form
    357,077.85/535,619.81 = 90,838.59/x
  3. Step 3: Cross multiply
    357,077.85x = 535,619.81 × 90,838.59
  4. Step 4: Simplify right side
    357,077.85x = 48,654,947,862.28
  5. Step 5: Solve for x
    x = 48,654,947,862.28/357,077.85
  6. Step 6: Final answer
    x = 136,258.66

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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.