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Finding the Fourth Proportional to 245,430.10, 368,145.15 and 217,873.90

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Solution

The fourth proportional to 245,430.10, 368,145.15 and 217,873.90 is: 326,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,430.10 : 368,145.15 = 217,873.90 : x
  2. Step 2: Convert to fraction form
    245,430.10/368,145.15 = 217,873.90/x
  3. Step 3: Cross multiply
    245,430.10x = 368,145.15 × 217,873.90
  4. Step 4: Simplify right side
    245,430.10x = 80,209,219,596.59
  5. Step 5: Solve for x
    x = 80,209,219,596.59/245,430.10
  6. Step 6: Final answer
    x = 326,810.85

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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.