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Finding the Fourth Proportional to 659,686.68, 989,527.56 and 238,864.12

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Solution

The fourth proportional to 659,686.68, 989,527.56 and 238,864.12 is: 358,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,686.68 : 989,527.56 = 238,864.12 : x
  2. Step 2: Convert to fraction form
    659,686.68/989,527.56 = 238,864.12/x
  3. Step 3: Cross multiply
    659,686.68x = 989,527.56 × 238,864.12
  4. Step 4: Simplify right side
    659,686.68x = 236,362,629,835.15
  5. Step 5: Solve for x
    x = 236,362,629,835.15/659,686.68
  6. Step 6: Final answer
    x = 358,295.29

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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.