Home / 429,940.66-645,002.70-145,621.24

Finding the Fourth Proportional to 429,940.66, 645,002.70 and 145,621.24

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Solution

The fourth proportional to 429,940.66, 645,002.70 and 145,621.24 is: 218,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,940.66 : 645,002.70 = 145,621.24 : x
  2. Step 2: Convert to fraction form
    429,940.66/645,002.70 = 145,621.24/x
  3. Step 3: Cross multiply
    429,940.66x = 645,002.70 × 145,621.24
  4. Step 4: Simplify right side
    429,940.66x = 93,926,092,977.35
  5. Step 5: Solve for x
    x = 93,926,092,977.35/429,940.66
  6. Step 6: Final answer
    x = 218,462.92

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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.