Home / 278,259.96-384,005.64-157,395.36

Finding the Fourth Proportional to 278,259.96, 384,005.64 and 157,395.36

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Solution

The fourth proportional to 278,259.96, 384,005.64 and 157,395.36 is: 217,209.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,259.96 : 384,005.64 = 157,395.36 : x
  2. Step 2: Convert to fraction form
    278,259.96/384,005.64 = 157,395.36/x
  3. Step 3: Cross multiply
    278,259.96x = 384,005.64 × 157,395.36
  4. Step 4: Simplify right side
    278,259.96x = 60,440,705,949.83
  5. Step 5: Solve for x
    x = 60,440,705,949.83/278,259.96
  6. Step 6: Final answer
    x = 217,209.50

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1.5x scale

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.