Home / 429,947.60-644,921.40-163,619.60

Finding the Fourth Proportional to 429,947.60, 644,921.40 and 163,619.60

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Solution

The fourth proportional to 429,947.60, 644,921.40 and 163,619.60 is: 245,429.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,947.60 : 644,921.40 = 163,619.60 : x
  2. Step 2: Convert to fraction form
    429,947.60/644,921.40 = 163,619.60/x
  3. Step 3: Cross multiply
    429,947.60x = 644,921.40 × 163,619.60
  4. Step 4: Simplify right side
    429,947.60x = 105,521,781,499.44
  5. Step 5: Solve for x
    x = 105,521,781,499.44/429,947.60
  6. Step 6: Final answer
    x = 245,429.40

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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.