Home / 460,139.40-690,072.90-207,273.72

Finding the Fourth Proportional to 460,139.40, 690,072.90 and 207,273.72

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Solution

The fourth proportional to 460,139.40, 690,072.90 and 207,273.72 is: 310,849.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,139.40 : 690,072.90 = 207,273.72 : x
  2. Step 2: Convert to fraction form
    460,139.40/690,072.90 = 207,273.72/x
  3. Step 3: Cross multiply
    460,139.40x = 690,072.90 × 207,273.72
  4. Step 4: Simplify right side
    460,139.40x = 143,033,977,054.19
  5. Step 5: Solve for x
    x = 143,033,977,054.19/460,139.40
  6. Step 6: Final answer
    x = 310,849.23

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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.