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Finding the Fourth Proportional to 496,718.40, 745,385.40 and 260,230.80

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Solution

The fourth proportional to 496,718.40, 745,385.40 and 260,230.80 is: 390,507.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,718.40 : 745,385.40 = 260,230.80 : x
  2. Step 2: Convert to fraction form
    496,718.40/745,385.40 = 260,230.80/x
  3. Step 3: Cross multiply
    496,718.40x = 745,385.40 × 260,230.80
  4. Step 4: Simplify right side
    496,718.40x = 193,972,238,950.32
  5. Step 5: Solve for x
    x = 193,972,238,950.32/496,718.40
  6. Step 6: Final answer
    x = 390,507.46

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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.