Home / 429,747.40-644,622.90-145,440.19

Finding the Fourth Proportional to 429,747.40, 644,622.90 and 145,440.19

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Solution

The fourth proportional to 429,747.40, 644,622.90 and 145,440.19 is: 218,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,747.40 : 644,622.90 = 145,440.19 : x
  2. Step 2: Convert to fraction form
    429,747.40/644,622.90 = 145,440.19/x
  3. Step 3: Cross multiply
    429,747.40x = 644,622.90 × 145,440.19
  4. Step 4: Simplify right side
    429,747.40x = 93,754,077,054.35
  5. Step 5: Solve for x
    x = 93,754,077,054.35/429,747.40
  6. Step 6: Final answer
    x = 218,160.89

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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.