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Finding the Fourth Proportional to 242,646.80, 363,840.60 and 84,880.40

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Solution

The fourth proportional to 242,646.80, 363,840.60 and 84,880.40 is: 127,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,646.80 : 363,840.60 = 84,880.40 : x
  2. Step 2: Convert to fraction form
    242,646.80/363,840.60 = 84,880.40/x
  3. Step 3: Cross multiply
    242,646.80x = 363,840.60 × 84,880.40
  4. Step 4: Simplify right side
    242,646.80x = 30,882,935,664.24
  5. Step 5: Solve for x
    x = 30,882,935,664.24/242,646.80
  6. Step 6: Final answer
    x = 127,275.26

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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.