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Finding the Fourth Proportional to 496,720.40, 745,388.40 and 260,232.80

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Solution

The fourth proportional to 496,720.40, 745,388.40 and 260,232.80 is: 390,510.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,720.40 : 745,388.40 = 260,232.80 : x
  2. Step 2: Convert to fraction form
    496,720.40/745,388.40 = 260,232.80/x
  3. Step 3: Cross multiply
    496,720.40x = 745,388.40 × 260,232.80
  4. Step 4: Simplify right side
    496,720.40x = 193,974,510,419.52
  5. Step 5: Solve for x
    x = 193,974,510,419.52/496,720.40
  6. Step 6: Final answer
    x = 390,510.46

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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.