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Finding the Fourth Proportional to 314,977.20, 472,465.80 and 308,416.20

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Solution

The fourth proportional to 314,977.20, 472,465.80 and 308,416.20 is: 462,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,977.20 : 472,465.80 = 308,416.20 : x
  2. Step 2: Convert to fraction form
    314,977.20/472,465.80 = 308,416.20/x
  3. Step 3: Cross multiply
    314,977.20x = 472,465.80 × 308,416.20
  4. Step 4: Simplify right side
    314,977.20x = 145,716,106,665.96
  5. Step 5: Solve for x
    x = 145,716,106,665.96/314,977.20
  6. Step 6: Final answer
    x = 462,624.30

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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.