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Finding the Fourth Proportional to 341,645.70, 512,456.40 and 154,657.20

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Solution

The fourth proportional to 341,645.70, 512,456.40 and 154,657.20 is: 231,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,645.70 : 512,456.40 = 154,657.20 : x
  2. Step 2: Convert to fraction form
    341,645.70/512,456.40 = 154,657.20/x
  3. Step 3: Cross multiply
    341,645.70x = 512,456.40 × 154,657.20
  4. Step 4: Simplify right side
    341,645.70x = 79,255,071,946.08
  5. Step 5: Solve for x
    x = 79,255,071,946.08/341,645.70
  6. Step 6: Final answer
    x = 231,980.30

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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.