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Finding the Fourth Proportional to 342,098.80, 512,802.60 and 155,244.40

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Solution

The fourth proportional to 342,098.80, 512,802.60 and 155,244.40 is: 232,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,098.80 : 512,802.60 = 155,244.40 : x
  2. Step 2: Convert to fraction form
    342,098.80/512,802.60 = 155,244.40/x
  3. Step 3: Cross multiply
    342,098.80x = 512,802.60 × 155,244.40
  4. Step 4: Simplify right side
    342,098.80x = 79,609,731,955.44
  5. Step 5: Solve for x
    x = 79,609,731,955.44/342,098.80
  6. Step 6: Final answer
    x = 232,709.77

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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.