Home / 525,212.20-788,207.10-209,895.40

Finding the Fourth Proportional to 525,212.20, 788,207.10 and 209,895.40

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Solution

The fourth proportional to 525,212.20, 788,207.10 and 209,895.40 is: 314,998.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,212.20 : 788,207.10 = 209,895.40 : x
  2. Step 2: Convert to fraction form
    525,212.20/788,207.10 = 209,895.40/x
  3. Step 3: Cross multiply
    525,212.20x = 788,207.10 × 209,895.40
  4. Step 4: Simplify right side
    525,212.20x = 165,441,044,537.34
  5. Step 5: Solve for x
    x = 165,441,044,537.34/525,212.20
  6. Step 6: Final answer
    x = 314,998.48

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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.