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Finding the Fourth Proportional to 257,130, 354,839.52 and 143,955.12

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Solution

The fourth proportional to 257,130, 354,839.52 and 143,955.12 is: 198,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,130 : 354,839.52 = 143,955.12 : x
  2. Step 2: Convert to fraction form
    257,130/354,839.52 = 143,955.12/x
  3. Step 3: Cross multiply
    257,130x = 354,839.52 × 143,955.12
  4. Step 4: Simplify right side
    257,130x = 51,080,965,682.34
  5. Step 5: Solve for x
    x = 51,080,965,682.34/257,130
  6. Step 6: Final answer
    x = 198,658.13

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1.5x scale

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.