Home / 390,844.35-539,701.82-245,891.74

Finding the Fourth Proportional to 390,844.35, 539,701.82 and 245,891.74

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Solution

The fourth proportional to 390,844.35, 539,701.82 and 245,891.74 is: 339,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,844.35 : 539,701.82 = 245,891.74 : x
  2. Step 2: Convert to fraction form
    390,844.35/539,701.82 = 245,891.74/x
  3. Step 3: Cross multiply
    390,844.35x = 539,701.82 × 245,891.74
  4. Step 4: Simplify right side
    390,844.35x = 132,708,220,950.22
  5. Step 5: Solve for x
    x = 132,708,220,950.22/390,844.35
  6. Step 6: Final answer
    x = 339,542.38

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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.