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Finding the Fourth Proportional to 309,288.64, 463,991.28 and 98,870.08

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Solution

The fourth proportional to 309,288.64, 463,991.28 and 98,870.08 is: 148,323.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,288.64 : 463,991.28 = 98,870.08 : x
  2. Step 2: Convert to fraction form
    309,288.64/463,991.28 = 98,870.08/x
  3. Step 3: Cross multiply
    309,288.64x = 463,991.28 × 98,870.08
  4. Step 4: Simplify right side
    309,288.64x = 45,874,854,972.90
  5. Step 5: Solve for x
    x = 45,874,854,972.90/309,288.64
  6. Step 6: Final answer
    x = 148,323.76

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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.