Home / 305,419.10-458,307.30-127,911.20

Finding the Fourth Proportional to 305,419.10, 458,307.30 and 127,911.20

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Solution

The fourth proportional to 305,419.10, 458,307.30 and 127,911.20 is: 191,941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,419.10 : 458,307.30 = 127,911.20 : x
  2. Step 2: Convert to fraction form
    305,419.10/458,307.30 = 127,911.20/x
  3. Step 3: Cross multiply
    305,419.10x = 458,307.30 × 127,911.20
  4. Step 4: Simplify right side
    305,419.10x = 58,622,636,711.76
  5. Step 5: Solve for x
    x = 58,622,636,711.76/305,419.10
  6. Step 6: Final answer
    x = 191,941.62

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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.