Home / 245,370.12-368,055.23-76,890.40

Finding the Fourth Proportional to 245,370.12, 368,055.23 and 76,890.40

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Solution

The fourth proportional to 245,370.12, 368,055.23 and 76,890.40 is: 115,335.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,370.12 : 368,055.23 = 76,890.40 : x
  2. Step 2: Convert to fraction form
    245,370.12/368,055.23 = 76,890.40/x
  3. Step 3: Cross multiply
    245,370.12x = 368,055.23 × 76,890.40
  4. Step 4: Simplify right side
    245,370.12x = 28,299,913,472.34
  5. Step 5: Solve for x
    x = 28,299,913,472.34/245,370.12
  6. Step 6: Final answer
    x = 115,335.62

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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.