Home / 278,985.63-385,002.41-151,660.92

Finding the Fourth Proportional to 278,985.63, 385,002.41 and 151,660.92

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Solution

The fourth proportional to 278,985.63, 385,002.41 and 151,660.92 is: 209,293.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,985.63 : 385,002.41 = 151,660.92 : x
  2. Step 2: Convert to fraction form
    278,985.63/385,002.41 = 151,660.92/x
  3. Step 3: Cross multiply
    278,985.63x = 385,002.41 × 151,660.92
  4. Step 4: Simplify right side
    278,985.63x = 58,389,818,944.51
  5. Step 5: Solve for x
    x = 58,389,818,944.51/278,985.63
  6. Step 6: Final answer
    x = 209,293.28

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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.