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Finding the Fourth Proportional to 242,915.71, 335,224.20 and 135,492.64

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Solution

The fourth proportional to 242,915.71, 335,224.20 and 135,492.64 is: 186,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,915.71 : 335,224.20 = 135,492.64 : x
  2. Step 2: Convert to fraction form
    242,915.71/335,224.20 = 135,492.64/x
  3. Step 3: Cross multiply
    242,915.71x = 335,224.20 × 135,492.64
  4. Step 4: Simplify right side
    242,915.71x = 45,420,411,849.89
  5. Step 5: Solve for x
    x = 45,420,411,849.89/242,915.71
  6. Step 6: Final answer
    x = 186,980.13

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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.