Home / 643,155.30-964,421.37-193,792.41

Finding the Fourth Proportional to 643,155.30, 964,421.37 and 193,792.41

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Solution

The fourth proportional to 643,155.30, 964,421.37 and 193,792.41 is: 290,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,155.30 : 964,421.37 = 193,792.41 : x
  2. Step 2: Convert to fraction form
    643,155.30/964,421.37 = 193,792.41/x
  3. Step 3: Cross multiply
    643,155.30x = 964,421.37 × 193,792.41
  4. Step 4: Simplify right side
    643,155.30x = 186,897,541,547.80
  5. Step 5: Solve for x
    x = 186,897,541,547.80/643,155.30
  6. Step 6: Final answer
    x = 290,594.73

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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.