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Finding the Fourth Proportional to 317,300.40, 476,356.30 and 272,607.70

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Solution

The fourth proportional to 317,300.40, 476,356.30 and 272,607.70 is: 409,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,300.40 : 476,356.30 = 272,607.70 : x
  2. Step 2: Convert to fraction form
    317,300.40/476,356.30 = 272,607.70/x
  3. Step 3: Cross multiply
    317,300.40x = 476,356.30 × 272,607.70
  4. Step 4: Simplify right side
    317,300.40x = 129,858,395,323.51
  5. Step 5: Solve for x
    x = 129,858,395,323.51/317,300.40
  6. Step 6: Final answer
    x = 409,260.11

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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.