Home / 239,948.76-331,129.28-139,353.24

Finding the Fourth Proportional to 239,948.76, 331,129.28 and 139,353.24

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Solution

The fourth proportional to 239,948.76, 331,129.28 and 139,353.24 is: 192,307.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,948.76 : 331,129.28 = 139,353.24 : x
  2. Step 2: Convert to fraction form
    239,948.76/331,129.28 = 139,353.24/x
  3. Step 3: Cross multiply
    239,948.76x = 331,129.28 × 139,353.24
  4. Step 4: Simplify right side
    239,948.76x = 46,143,938,026.87
  5. Step 5: Solve for x
    x = 46,143,938,026.87/239,948.76
  6. Step 6: Final answer
    x = 192,307.47

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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.