Home / 219,897.18-329,325.08-139,648.05

Finding the Fourth Proportional to 219,897.18, 329,325.08 and 139,648.05

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Solution

The fourth proportional to 219,897.18, 329,325.08 and 139,648.05 is: 209,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,897.18 : 329,325.08 = 139,648.05 : x
  2. Step 2: Convert to fraction form
    219,897.18/329,325.08 = 139,648.05/x
  3. Step 3: Cross multiply
    219,897.18x = 329,325.08 × 139,648.05
  4. Step 4: Simplify right side
    219,897.18x = 45,989,604,539.85
  5. Step 5: Solve for x
    x = 45,989,604,539.85/219,897.18
  6. Step 6: Final answer
    x = 209,141.40

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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.