Home / 642,688.62-964,167.78-193,442.34

Finding the Fourth Proportional to 642,688.62, 964,167.78 and 193,442.34

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Solution

The fourth proportional to 642,688.62, 964,167.78 and 193,442.34 is: 290,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,688.62 : 964,167.78 = 193,442.34 : x
  2. Step 2: Convert to fraction form
    642,688.62/964,167.78 = 193,442.34/x
  3. Step 3: Cross multiply
    642,688.62x = 964,167.78 × 193,442.34
  4. Step 4: Simplify right side
    642,688.62x = 186,510,871,515.81
  5. Step 5: Solve for x
    x = 186,510,871,515.81/642,688.62
  6. Step 6: Final answer
    x = 290,204.10

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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.