Home / 402,817.45-555,875.38-221,528.82

Finding the Fourth Proportional to 402,817.45, 555,875.38 and 221,528.82

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Solution

The fourth proportional to 402,817.45, 555,875.38 and 221,528.82 is: 305,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,817.45 : 555,875.38 = 221,528.82 : x
  2. Step 2: Convert to fraction form
    402,817.45/555,875.38 = 221,528.82/x
  3. Step 3: Cross multiply
    402,817.45x = 555,875.38 × 221,528.82
  4. Step 4: Simplify right side
    402,817.45x = 123,142,415,890.81
  5. Step 5: Solve for x
    x = 123,142,415,890.81/402,817.45
  6. Step 6: Final answer
    x = 305,702.78

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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.