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Finding the Fourth Proportional to 253,813.79, 350,263.44 and 139,074.20

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Solution

The fourth proportional to 253,813.79, 350,263.44 and 139,074.20 is: 191,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,813.79 : 350,263.44 = 139,074.20 : x
  2. Step 2: Convert to fraction form
    253,813.79/350,263.44 = 139,074.20/x
  3. Step 3: Cross multiply
    253,813.79x = 350,263.44 × 139,074.20
  4. Step 4: Simplify right side
    253,813.79x = 48,712,607,707.25
  5. Step 5: Solve for x
    x = 48,712,607,707.25/253,813.79
  6. Step 6: Final answer
    x = 191,922.62

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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.