Home / 393,285.11-542,775.07-240,412.80

Finding the Fourth Proportional to 393,285.11, 542,775.07 and 240,412.80

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Solution

The fourth proportional to 393,285.11, 542,775.07 and 240,412.80 is: 331,795.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,285.11 : 542,775.07 = 240,412.80 : x
  2. Step 2: Convert to fraction form
    393,285.11/542,775.07 = 240,412.80/x
  3. Step 3: Cross multiply
    393,285.11x = 542,775.07 × 240,412.80
  4. Step 4: Simplify right side
    393,285.11x = 130,490,071,033.99
  5. Step 5: Solve for x
    x = 130,490,071,033.99/393,285.11
  6. Step 6: Final answer
    x = 331,795.10

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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.