Home / 285,139.27-393,465.48-170,395.06

Finding the Fourth Proportional to 285,139.27, 393,465.48 and 170,395.06

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Solution

The fourth proportional to 285,139.27, 393,465.48 and 170,395.06 is: 235,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,139.27 : 393,465.48 = 170,395.06 : x
  2. Step 2: Convert to fraction form
    285,139.27/393,465.48 = 170,395.06/x
  3. Step 3: Cross multiply
    285,139.27x = 393,465.48 × 170,395.06
  4. Step 4: Simplify right side
    285,139.27x = 67,044,575,322.45
  5. Step 5: Solve for x
    x = 67,044,575,322.45/285,139.27
  6. Step 6: Final answer
    x = 235,129.23

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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.