Home / 431,082.16-646,623.18-131,564.28

Finding the Fourth Proportional to 431,082.16, 646,623.18 and 131,564.28

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Solution

The fourth proportional to 431,082.16, 646,623.18 and 131,564.28 is: 197,346.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,082.16 : 646,623.18 = 131,564.28 : x
  2. Step 2: Convert to fraction form
    431,082.16/646,623.18 = 131,564.28/x
  3. Step 3: Cross multiply
    431,082.16x = 646,623.18 × 131,564.28
  4. Step 4: Simplify right side
    431,082.16x = 85,072,513,108.01
  5. Step 5: Solve for x
    x = 85,072,513,108.01/431,082.16
  6. Step 6: Final answer
    x = 197,346.40

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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.