Home / 427,259.10-640,925.24-111,715.50

Finding the Fourth Proportional to 427,259.10, 640,925.24 and 111,715.50

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Solution

The fourth proportional to 427,259.10, 640,925.24 and 111,715.50 is: 167,582.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,259.10 : 640,925.24 = 111,715.50 : x
  2. Step 2: Convert to fraction form
    427,259.10/640,925.24 = 111,715.50/x
  3. Step 3: Cross multiply
    427,259.10x = 640,925.24 × 111,715.50
  4. Step 4: Simplify right side
    427,259.10x = 71,601,283,649.22
  5. Step 5: Solve for x
    x = 71,601,283,649.22/427,259.10
  6. Step 6: Final answer
    x = 167,582.82

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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.