Home / 429,043.18-643,543.97-159,223.92

Finding the Fourth Proportional to 429,043.18, 643,543.97 and 159,223.92

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Solution

The fourth proportional to 429,043.18, 643,543.97 and 159,223.92 is: 238,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,043.18 : 643,543.97 = 159,223.92 : x
  2. Step 2: Convert to fraction form
    429,043.18/643,543.97 = 159,223.92/x
  3. Step 3: Cross multiply
    429,043.18x = 643,543.97 × 159,223.92
  4. Step 4: Simplify right side
    429,043.18x = 102,467,590,386.35
  5. Step 5: Solve for x
    x = 102,467,590,386.35/429,043.18
  6. Step 6: Final answer
    x = 238,828.15

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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.