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Finding the Fourth Proportional to 393,572.76, 590,330.66 and 123,778.07

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Solution

The fourth proportional to 393,572.76, 590,330.66 and 123,778.07 is: 185,658.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,572.76 : 590,330.66 = 123,778.07 : x
  2. Step 2: Convert to fraction form
    393,572.76/590,330.66 = 123,778.07/x
  3. Step 3: Cross multiply
    393,572.76x = 590,330.66 × 123,778.07
  4. Step 4: Simplify right side
    393,572.76x = 73,069,989,756.63
  5. Step 5: Solve for x
    x = 73,069,989,756.63/393,572.76
  6. Step 6: Final answer
    x = 185,658.15

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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.