Home / 278,780.40-384,714.90-151,457.04

Finding the Fourth Proportional to 278,780.40, 384,714.90 and 151,457.04

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Solution

The fourth proportional to 278,780.40, 384,714.90 and 151,457.04 is: 209,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,780.40 : 384,714.90 = 151,457.04 : x
  2. Step 2: Convert to fraction form
    278,780.40/384,714.90 = 151,457.04/x
  3. Step 3: Cross multiply
    278,780.40x = 384,714.90 × 151,457.04
  4. Step 4: Simplify right side
    278,780.40x = 58,267,779,997.90
  5. Step 5: Solve for x
    x = 58,267,779,997.90/278,780.40
  6. Step 6: Final answer
    x = 209,009.60

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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.