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Finding the Fourth Proportional to 295,209.21, 440,510.50 and 263,400.51

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Solution

The fourth proportional to 295,209.21, 440,510.50 and 263,400.51 is: 393,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,209.21 : 440,510.50 = 263,400.51 : x
  2. Step 2: Convert to fraction form
    295,209.21/440,510.50 = 263,400.51/x
  3. Step 3: Cross multiply
    295,209.21x = 440,510.50 × 263,400.51
  4. Step 4: Simplify right side
    295,209.21x = 116,030,688,816.30
  5. Step 5: Solve for x
    x = 116,030,688,816.30/295,209.21
  6. Step 6: Final answer
    x = 393,045.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.