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Finding the Fourth Proportional to 437,999.80, 656,999.70 and 188,681.80

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Solution

The fourth proportional to 437,999.80, 656,999.70 and 188,681.80 is: 283,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,999.80 : 656,999.70 = 188,681.80 : x
  2. Step 2: Convert to fraction form
    437,999.80/656,999.70 = 188,681.80/x
  3. Step 3: Cross multiply
    437,999.80x = 656,999.70 × 188,681.80
  4. Step 4: Simplify right side
    437,999.80x = 123,963,885,995.46
  5. Step 5: Solve for x
    x = 123,963,885,995.46/437,999.80
  6. Step 6: Final answer
    x = 283,022.70

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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.