Home / 285,139.40-393,465.71-170,395.27

Finding the Fourth Proportional to 285,139.40, 393,465.71 and 170,395.27

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Solution

The fourth proportional to 285,139.40, 393,465.71 and 170,395.27 is: 235,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,139.40 : 393,465.71 = 170,395.27 : x
  2. Step 2: Convert to fraction form
    285,139.40/393,465.71 = 170,395.27/x
  3. Step 3: Cross multiply
    285,139.40x = 393,465.71 × 170,395.27
  4. Step 4: Simplify right side
    285,139.40x = 67,044,697,300.84
  5. Step 5: Solve for x
    x = 67,044,697,300.84/285,139.40
  6. Step 6: Final answer
    x = 235,129.54

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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.