Home / 457,947.20-686,726.40-221,362.40

Finding the Fourth Proportional to 457,947.20, 686,726.40 and 221,362.40

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Solution

The fourth proportional to 457,947.20, 686,726.40 and 221,362.40 is: 331,949.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,947.20 : 686,726.40 = 221,362.40 : x
  2. Step 2: Convert to fraction form
    457,947.20/686,726.40 = 221,362.40/x
  3. Step 3: Cross multiply
    457,947.20x = 686,726.40 × 221,362.40
  4. Step 4: Simplify right side
    457,947.20x = 152,015,404,047.36
  5. Step 5: Solve for x
    x = 152,015,404,047.36/457,947.20
  6. Step 6: Final answer
    x = 331,949.63

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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.