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Finding the Fourth Proportional to 309,816.64, 464,681.04 and 99,426.88

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Solution

The fourth proportional to 309,816.64, 464,681.04 and 99,426.88 is: 149,126.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,816.64 : 464,681.04 = 99,426.88 : x
  2. Step 2: Convert to fraction form
    309,816.64/464,681.04 = 99,426.88/x
  3. Step 3: Cross multiply
    309,816.64x = 464,681.04 × 99,426.88
  4. Step 4: Simplify right side
    309,816.64x = 46,201,786,002.36
  5. Step 5: Solve for x
    x = 46,201,786,002.36/309,816.64
  6. Step 6: Final answer
    x = 149,126.23

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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.