Home / 423,172.65-634,338.50-212,166.57

Finding the Fourth Proportional to 423,172.65, 634,338.50 and 212,166.57

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Solution

The fourth proportional to 423,172.65, 634,338.50 and 212,166.57 is: 318,039.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,172.65 : 634,338.50 = 212,166.57 : x
  2. Step 2: Convert to fraction form
    423,172.65/634,338.50 = 212,166.57/x
  3. Step 3: Cross multiply
    423,172.65x = 634,338.50 × 212,166.57
  4. Step 4: Simplify right side
    423,172.65x = 134,585,422,703.11
  5. Step 5: Solve for x
    x = 134,585,422,703.11/423,172.65
  6. Step 6: Final answer
    x = 318,039.04

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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.