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Finding the Fourth Proportional to 317,901.80, 476,852.70 and 266,580.20

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Solution

The fourth proportional to 317,901.80, 476,852.70 and 266,580.20 is: 399,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,901.80 : 476,852.70 = 266,580.20 : x
  2. Step 2: Convert to fraction form
    317,901.80/476,852.70 = 266,580.20/x
  3. Step 3: Cross multiply
    317,901.80x = 476,852.70 × 266,580.20
  4. Step 4: Simplify right side
    317,901.80x = 127,119,488,136.54
  5. Step 5: Solve for x
    x = 127,119,488,136.54/317,901.80
  6. Step 6: Final answer
    x = 399,870.30

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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.