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Finding the Fourth Proportional to 341,973.20, 512,959.80 and 105,388.40

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Solution

The fourth proportional to 341,973.20, 512,959.80 and 105,388.40 is: 158,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,973.20 : 512,959.80 = 105,388.40 : x
  2. Step 2: Convert to fraction form
    341,973.20/512,959.80 = 105,388.40/x
  3. Step 3: Cross multiply
    341,973.20x = 512,959.80 × 105,388.40
  4. Step 4: Simplify right side
    341,973.20x = 54,060,012,586.32
  5. Step 5: Solve for x
    x = 54,060,012,586.32/341,973.20
  6. Step 6: Final answer
    x = 158,082.60

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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.