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Finding the Fourth Proportional to 242,881.20, 364,321.80 and 172,022.40

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Solution

The fourth proportional to 242,881.20, 364,321.80 and 172,022.40 is: 258,033.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,881.20 : 364,321.80 = 172,022.40 : x
  2. Step 2: Convert to fraction form
    242,881.20/364,321.80 = 172,022.40/x
  3. Step 3: Cross multiply
    242,881.20x = 364,321.80 × 172,022.40
  4. Step 4: Simplify right side
    242,881.20x = 62,671,510,408.32
  5. Step 5: Solve for x
    x = 62,671,510,408.32/242,881.20
  6. Step 6: Final answer
    x = 258,033.60

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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.