Home / 257,040.19-354,705.78-142,316.56

Finding the Fourth Proportional to 257,040.19, 354,705.78 and 142,316.56

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Solution

The fourth proportional to 257,040.19, 354,705.78 and 142,316.56 is: 196,391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,040.19 : 354,705.78 = 142,316.56 : x
  2. Step 2: Convert to fraction form
    257,040.19/354,705.78 = 142,316.56/x
  3. Step 3: Cross multiply
    257,040.19x = 354,705.78 × 142,316.56
  4. Step 4: Simplify right side
    257,040.19x = 50,480,506,421.72
  5. Step 5: Solve for x
    x = 50,480,506,421.72/257,040.19
  6. Step 6: Final answer
    x = 196,391.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.