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Finding the Fourth Proportional to 259,925.40, 389,888.10 and 230,400.90

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Solution

The fourth proportional to 259,925.40, 389,888.10 and 230,400.90 is: 345,601.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,925.40 : 389,888.10 = 230,400.90 : x
  2. Step 2: Convert to fraction form
    259,925.40/389,888.10 = 230,400.90/x
  3. Step 3: Cross multiply
    259,925.40x = 389,888.10 × 230,400.90
  4. Step 4: Simplify right side
    259,925.40x = 89,830,569,139.29
  5. Step 5: Solve for x
    x = 89,830,569,139.29/259,925.40
  6. Step 6: Final answer
    x = 345,601.35

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1.5x scale

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.