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Finding the Fourth Proportional to 480,902.40, 663,526.08 and 310,932

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Solution

The fourth proportional to 480,902.40, 663,526.08 and 310,932 is: 429,009.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,902.40 : 663,526.08 = 310,932 : x
  2. Step 2: Convert to fraction form
    480,902.40/663,526.08 = 310,932/x
  3. Step 3: Cross multiply
    480,902.40x = 663,526.08 × 310,932
  4. Step 4: Simplify right side
    480,902.40x = 206,311,491,106.56
  5. Step 5: Solve for x
    x = 206,311,491,106.56/480,902.40
  6. Step 6: Final answer
    x = 429,009.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.