Home / 259,320.80-388,981.20-243,574.40

Finding the Fourth Proportional to 259,320.80, 388,981.20 and 243,574.40

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Solution

The fourth proportional to 259,320.80, 388,981.20 and 243,574.40 is: 365,361.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,320.80 : 388,981.20 = 243,574.40 : x
  2. Step 2: Convert to fraction form
    259,320.80/388,981.20 = 243,574.40/x
  3. Step 3: Cross multiply
    259,320.80x = 388,981.20 × 243,574.40
  4. Step 4: Simplify right side
    259,320.80x = 94,745,862,401.28
  5. Step 5: Solve for x
    x = 94,745,862,401.28/259,320.80
  6. Step 6: Final answer
    x = 365,361.60

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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.