Home / 426,890.32-640,521.24-202,408

Finding the Fourth Proportional to 426,890.32, 640,521.24 and 202,408

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Solution

The fourth proportional to 426,890.32, 640,521.24 and 202,408 is: 303,700.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,890.32 : 640,521.24 = 202,408 : x
  2. Step 2: Convert to fraction form
    426,890.32/640,521.24 = 202,408/x
  3. Step 3: Cross multiply
    426,890.32x = 640,521.24 × 202,408
  4. Step 4: Simplify right side
    426,890.32x = 129,646,623,145.92
  5. Step 5: Solve for x
    x = 129,646,623,145.92/426,890.32
  6. Step 6: Final answer
    x = 303,700.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.