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Finding the Fourth Proportional to 215,307.50, 323,030.39 and 65,576.75

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Solution

The fourth proportional to 215,307.50, 323,030.39 and 65,576.75 is: 98,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,307.50 : 323,030.39 = 65,576.75 : x
  2. Step 2: Convert to fraction form
    215,307.50/323,030.39 = 65,576.75/x
  3. Step 3: Cross multiply
    215,307.50x = 323,030.39 × 65,576.75
  4. Step 4: Simplify right side
    215,307.50x = 21,183,281,184.40
  5. Step 5: Solve for x
    x = 21,183,281,184.40/215,307.50
  6. Step 6: Final answer
    x = 98,386.18

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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.