Home / 642,428.50-963,702.15-169,116.34

Finding the Fourth Proportional to 642,428.50, 963,702.15 and 169,116.34

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Solution

The fourth proportional to 642,428.50, 963,702.15 and 169,116.34 is: 253,690.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,428.50 : 963,702.15 = 169,116.34 : x
  2. Step 2: Convert to fraction form
    642,428.50/963,702.15 = 169,116.34/x
  3. Step 3: Cross multiply
    642,428.50x = 963,702.15 × 169,116.34
  4. Step 4: Simplify right side
    642,428.50x = 162,977,780,458.13
  5. Step 5: Solve for x
    x = 162,977,780,458.13/642,428.50
  6. Step 6: Final answer
    x = 253,690.15

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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.