Home / 429,938.66-644,999.70-145,619.24

Finding the Fourth Proportional to 429,938.66, 644,999.70 and 145,619.24

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Solution

The fourth proportional to 429,938.66, 644,999.70 and 145,619.24 is: 218,459.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,938.66 : 644,999.70 = 145,619.24 : x
  2. Step 2: Convert to fraction form
    429,938.66/644,999.70 = 145,619.24/x
  3. Step 3: Cross multiply
    429,938.66x = 644,999.70 × 145,619.24
  4. Step 4: Simplify right side
    429,938.66x = 93,924,362,889.23
  5. Step 5: Solve for x
    x = 93,924,362,889.23/429,938.66
  6. Step 6: Final answer
    x = 218,459.92

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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.