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Finding the Fourth Proportional to 380,219.20, 569,714.40 and 239,726.40

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Solution

The fourth proportional to 380,219.20, 569,714.40 and 239,726.40 is: 359,202.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,219.20 : 569,714.40 = 239,726.40 : x
  2. Step 2: Convert to fraction form
    380,219.20/569,714.40 = 239,726.40/x
  3. Step 3: Cross multiply
    380,219.20x = 569,714.40 × 239,726.40
  4. Step 4: Simplify right side
    380,219.20x = 136,575,582,140.16
  5. Step 5: Solve for x
    x = 136,575,582,140.16/380,219.20
  6. Step 6: Final answer
    x = 359,202.22

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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.