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Finding the Fourth Proportional to 240,879.60, 360,944.10 and 91,038.15

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Solution

The fourth proportional to 240,879.60, 360,944.10 and 91,038.15 is: 136,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,879.60 : 360,944.10 = 91,038.15 : x
  2. Step 2: Convert to fraction form
    240,879.60/360,944.10 = 91,038.15/x
  3. Step 3: Cross multiply
    240,879.60x = 360,944.10 × 91,038.15
  4. Step 4: Simplify right side
    240,879.60x = 32,859,683,117.42
  5. Step 5: Solve for x
    x = 32,859,683,117.42/240,879.60
  6. Step 6: Final answer
    x = 136,415.38

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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.