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Finding the Fourth Proportional to 242,720.20, 364,080.30 and 158,739.40

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Solution

The fourth proportional to 242,720.20, 364,080.30 and 158,739.40 is: 238,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,720.20 : 364,080.30 = 158,739.40 : x
  2. Step 2: Convert to fraction form
    242,720.20/364,080.30 = 158,739.40/x
  3. Step 3: Cross multiply
    242,720.20x = 364,080.30 × 158,739.40
  4. Step 4: Simplify right side
    242,720.20x = 57,793,888,373.82
  5. Step 5: Solve for x
    x = 57,793,888,373.82/242,720.20
  6. Step 6: Final answer
    x = 238,109.10

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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.