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Finding the Fourth Proportional to 393,189.09, 542,583.06 and 240,483.03

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Solution

The fourth proportional to 393,189.09, 542,583.06 and 240,483.03 is: 331,855.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,189.09 : 542,583.06 = 240,483.03 : x
  2. Step 2: Convert to fraction form
    393,189.09/542,583.06 = 240,483.03/x
  3. Step 3: Cross multiply
    393,189.09x = 542,583.06 × 240,483.03
  4. Step 4: Simplify right side
    393,189.09x = 130,482,018,295.47
  5. Step 5: Solve for x
    x = 130,482,018,295.47/393,189.09
  6. Step 6: Final answer
    x = 331,855.64

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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.