Home / 429,290.76-643,928.58-148,803.96

Finding the Fourth Proportional to 429,290.76, 643,928.58 and 148,803.96

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Solution

The fourth proportional to 429,290.76, 643,928.58 and 148,803.96 is: 223,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,290.76 : 643,928.58 = 148,803.96 : x
  2. Step 2: Convert to fraction form
    429,290.76/643,928.58 = 148,803.96/x
  3. Step 3: Cross multiply
    429,290.76x = 643,928.58 × 148,803.96
  4. Step 4: Simplify right side
    429,290.76x = 95,819,122,661.18
  5. Step 5: Solve for x
    x = 95,819,122,661.18/429,290.76
  6. Step 6: Final answer
    x = 223,203.32

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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.