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Finding the Fourth Proportional to 401,966.80, 602,431.80 and 308,006.80

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Solution

The fourth proportional to 401,966.80, 602,431.80 and 308,006.80 is: 461,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,966.80 : 602,431.80 = 308,006.80 : x
  2. Step 2: Convert to fraction form
    401,966.80/602,431.80 = 308,006.80/x
  3. Step 3: Cross multiply
    401,966.80x = 602,431.80 × 308,006.80
  4. Step 4: Simplify right side
    401,966.80x = 185,553,090,936.24
  5. Step 5: Solve for x
    x = 185,553,090,936.24/401,966.80
  6. Step 6: Final answer
    x = 461,612.98

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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.