Home / 257,721.96-386,427.59-115,541.50

Finding the Fourth Proportional to 257,721.96, 386,427.59 and 115,541.50

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Solution

The fourth proportional to 257,721.96, 386,427.59 and 115,541.50 is: 173,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,721.96 : 386,427.59 = 115,541.50 : x
  2. Step 2: Convert to fraction form
    257,721.96/386,427.59 = 115,541.50/x
  3. Step 3: Cross multiply
    257,721.96x = 386,427.59 × 115,541.50
  4. Step 4: Simplify right side
    257,721.96x = 44,648,423,389.99
  5. Step 5: Solve for x
    x = 44,648,423,389.99/257,721.96
  6. Step 6: Final answer
    x = 173,242.60

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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.