Home / 259,237.40-388,808.10-72,210.20

Finding the Fourth Proportional to 259,237.40, 388,808.10 and 72,210.20

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Solution

The fourth proportional to 259,237.40, 388,808.10 and 72,210.20 is: 108,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,237.40 : 388,808.10 = 72,210.20 : x
  2. Step 2: Convert to fraction form
    259,237.40/388,808.10 = 72,210.20/x
  3. Step 3: Cross multiply
    259,237.40x = 388,808.10 × 72,210.20
  4. Step 4: Simplify right side
    259,237.40x = 28,075,910,662.62
  5. Step 5: Solve for x
    x = 28,075,910,662.62/259,237.40
  6. Step 6: Final answer
    x = 108,301.93

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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.