Home / 349,934.40-525,031.20-139,723.20

Finding the Fourth Proportional to 349,934.40, 525,031.20 and 139,723.20

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Solution

The fourth proportional to 349,934.40, 525,031.20 and 139,723.20 is: 209,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,934.40 : 525,031.20 = 139,723.20 : x
  2. Step 2: Convert to fraction form
    349,934.40/525,031.20 = 139,723.20/x
  3. Step 3: Cross multiply
    349,934.40x = 525,031.20 × 139,723.20
  4. Step 4: Simplify right side
    349,934.40x = 73,359,039,363.84
  5. Step 5: Solve for x
    x = 73,359,039,363.84/349,934.40
  6. Step 6: Final answer
    x = 209,636.55

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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.