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Finding the Fourth Proportional to 560,612.79, 840,419.19 and 205,544.25

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Solution

The fourth proportional to 560,612.79, 840,419.19 and 205,544.25 is: 308,133.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,612.79 : 840,419.19 = 205,544.25 : x
  2. Step 2: Convert to fraction form
    560,612.79/840,419.19 = 205,544.25/x
  3. Step 3: Cross multiply
    560,612.79x = 840,419.19 × 205,544.25
  4. Step 4: Simplify right side
    560,612.79x = 172,743,332,094.16
  5. Step 5: Solve for x
    x = 172,743,332,094.16/560,612.79
  6. Step 6: Final answer
    x = 308,133.06

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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.