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Finding the Fourth Proportional to 215,263.74, 322,907.74 and 65,508.90

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Solution

The fourth proportional to 215,263.74, 322,907.74 and 65,508.90 is: 98,267.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,263.74 : 322,907.74 = 65,508.90 : x
  2. Step 2: Convert to fraction form
    215,263.74/322,907.74 = 65,508.90/x
  3. Step 3: Cross multiply
    215,263.74x = 322,907.74 × 65,508.90
  4. Step 4: Simplify right side
    215,263.74x = 21,153,330,848.89
  5. Step 5: Solve for x
    x = 21,153,330,848.89/215,263.74
  6. Step 6: Final answer
    x = 98,267.04

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1.5x scale

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.