Home / 248,143.56-342,254.76-157,421.28

Finding the Fourth Proportional to 248,143.56, 342,254.76 and 157,421.28

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Solution

The fourth proportional to 248,143.56, 342,254.76 and 157,421.28 is: 217,125.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,143.56 : 342,254.76 = 157,421.28 : x
  2. Step 2: Convert to fraction form
    248,143.56/342,254.76 = 157,421.28/x
  3. Step 3: Cross multiply
    248,143.56x = 342,254.76 × 157,421.28
  4. Step 4: Simplify right side
    248,143.56x = 53,878,182,405.29
  5. Step 5: Solve for x
    x = 53,878,182,405.29/248,143.56
  6. Step 6: Final answer
    x = 217,125.05

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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.