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Finding the Fourth Proportional to 245,029.20, 343,390.80 and 245,029.20

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Solution

The fourth proportional to 245,029.20, 343,390.80 and 245,029.20 is: 343,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,029.20 : 343,390.80 = 245,029.20 : x
  2. Step 2: Convert to fraction form
    245,029.20/343,390.80 = 245,029.20/x
  3. Step 3: Cross multiply
    245,029.20x = 343,390.80 × 245,029.20
  4. Step 4: Simplify right side
    245,029.20x = 84,140,773,011.36
  5. Step 5: Solve for x
    x = 84,140,773,011.36/245,029.20
  6. Step 6: Final answer
    x = 343,390.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.