Home / 439,547.72-659,421-140,045.36

Finding the Fourth Proportional to 439,547.72, 659,421 and 140,045.36

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Solution

The fourth proportional to 439,547.72, 659,421 and 140,045.36 is: 210,099.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,547.72 : 659,421 = 140,045.36 : x
  2. Step 2: Convert to fraction form
    439,547.72/659,421 = 140,045.36/x
  3. Step 3: Cross multiply
    439,547.72x = 659,421 × 140,045.36
  4. Step 4: Simplify right side
    439,547.72x = 92,348,848,039.46
  5. Step 5: Solve for x
    x = 92,348,848,039.46/439,547.72
  6. Step 6: Final answer
    x = 210,099.71

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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.