Home / 430,109.71-645,295.79-219,895.27

Finding the Fourth Proportional to 430,109.71, 645,295.79 and 219,895.27

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Solution

The fourth proportional to 430,109.71, 645,295.79 and 219,895.27 is: 329,909.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,109.71 : 645,295.79 = 219,895.27 : x
  2. Step 2: Convert to fraction form
    430,109.71/645,295.79 = 219,895.27/x
  3. Step 3: Cross multiply
    430,109.71x = 645,295.79 × 219,895.27
  4. Step 4: Simplify right side
    430,109.71x = 141,897,490,908.41
  5. Step 5: Solve for x
    x = 141,897,490,908.41/430,109.71
  6. Step 6: Final answer
    x = 329,909.99

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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.