Home / 514,715.10-771,977.87-215,115.23

Finding the Fourth Proportional to 514,715.10, 771,977.87 and 215,115.23

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Solution

The fourth proportional to 514,715.10, 771,977.87 and 215,115.23 is: 322,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,715.10 : 771,977.87 = 215,115.23 : x
  2. Step 2: Convert to fraction form
    514,715.10/771,977.87 = 215,115.23/x
  3. Step 3: Cross multiply
    514,715.10x = 771,977.87 × 215,115.23
  4. Step 4: Simplify right side
    514,715.10x = 166,064,197,059.96
  5. Step 5: Solve for x
    x = 166,064,197,059.96/514,715.10
  6. Step 6: Final answer
    x = 322,633.23

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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.