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Finding the Fourth Proportional to 259,560.30, 389,340.45 and 70,020.30

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Solution

The fourth proportional to 259,560.30, 389,340.45 and 70,020.30 is: 105,030.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,560.30 : 389,340.45 = 70,020.30 : x
  2. Step 2: Convert to fraction form
    259,560.30/389,340.45 = 70,020.30/x
  3. Step 3: Cross multiply
    259,560.30x = 389,340.45 × 70,020.30
  4. Step 4: Simplify right side
    259,560.30x = 27,261,735,111.14
  5. Step 5: Solve for x
    x = 27,261,735,111.14/259,560.30
  6. Step 6: Final answer
    x = 105,030.45

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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.