Home / 389,369.38-537,329.74-210,521.38

Finding the Fourth Proportional to 389,369.38, 537,329.74 and 210,521.38

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Solution

The fourth proportional to 389,369.38, 537,329.74 and 210,521.38 is: 290,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,369.38 : 537,329.74 = 210,521.38 : x
  2. Step 2: Convert to fraction form
    389,369.38/537,329.74 = 210,521.38/x
  3. Step 3: Cross multiply
    389,369.38x = 537,329.74 × 210,521.38
  4. Step 4: Simplify right side
    389,369.38x = 113,119,395,693.19
  5. Step 5: Solve for x
    x = 113,119,395,693.19/389,369.38
  6. Step 6: Final answer
    x = 290,519.50

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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.