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Finding the Fourth Proportional to 642,495.70, 963,670.65 and 169,218.10

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Solution

The fourth proportional to 642,495.70, 963,670.65 and 169,218.10 is: 253,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,495.70 : 963,670.65 = 169,218.10 : x
  2. Step 2: Convert to fraction form
    642,495.70/963,670.65 = 169,218.10/x
  3. Step 3: Cross multiply
    642,495.70x = 963,670.65 × 169,218.10
  4. Step 4: Simplify right side
    642,495.70x = 163,070,516,418.77
  5. Step 5: Solve for x
    x = 163,070,516,418.77/642,495.70
  6. Step 6: Final answer
    x = 253,807.95

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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.