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Finding the Fourth Proportional to 245,903.70, 368,337.15 and 219,638.10

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Solution

The fourth proportional to 245,903.70, 368,337.15 and 219,638.10 is: 328,994.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,903.70 : 368,337.15 = 219,638.10 : x
  2. Step 2: Convert to fraction form
    245,903.70/368,337.15 = 219,638.10/x
  3. Step 3: Cross multiply
    245,903.70x = 368,337.15 × 219,638.10
  4. Step 4: Simplify right side
    245,903.70x = 80,900,871,785.42
  5. Step 5: Solve for x
    x = 80,900,871,785.42/245,903.70
  6. Step 6: Final answer
    x = 328,994.12

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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.