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Finding the Fourth Proportional to 323,123.64, 484,678.53 and 86,466.30

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Solution

The fourth proportional to 323,123.64, 484,678.53 and 86,466.30 is: 129,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,123.64 : 484,678.53 = 86,466.30 : x
  2. Step 2: Convert to fraction form
    323,123.64/484,678.53 = 86,466.30/x
  3. Step 3: Cross multiply
    323,123.64x = 484,678.53 × 86,466.30
  4. Step 4: Simplify right side
    323,123.64x = 41,908,359,178.54
  5. Step 5: Solve for x
    x = 41,908,359,178.54/323,123.64
  6. Step 6: Final answer
    x = 129,697.60

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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.