Home / 257,389.07-355,211.01-142,681.30

Finding the Fourth Proportional to 257,389.07, 355,211.01 and 142,681.30

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Solution

The fourth proportional to 257,389.07, 355,211.01 and 142,681.30 is: 196,908.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,389.07 : 355,211.01 = 142,681.30 : x
  2. Step 2: Convert to fraction form
    257,389.07/355,211.01 = 142,681.30/x
  3. Step 3: Cross multiply
    257,389.07x = 355,211.01 × 142,681.30
  4. Step 4: Simplify right side
    257,389.07x = 50,681,967,793.09
  5. Step 5: Solve for x
    x = 50,681,967,793.09/257,389.07
  6. Step 6: Final answer
    x = 196,908.01

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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.