Home / 434,430.30-651,645.45-221,853.90

Finding the Fourth Proportional to 434,430.30, 651,645.45 and 221,853.90

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Solution

The fourth proportional to 434,430.30, 651,645.45 and 221,853.90 is: 332,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,430.30 : 651,645.45 = 221,853.90 : x
  2. Step 2: Convert to fraction form
    434,430.30/651,645.45 = 221,853.90/x
  3. Step 3: Cross multiply
    434,430.30x = 651,645.45 × 221,853.90
  4. Step 4: Simplify right side
    434,430.30x = 144,570,084,499.76
  5. Step 5: Solve for x
    x = 144,570,084,499.76/434,430.30
  6. Step 6: Final answer
    x = 332,780.85

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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.