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Finding the Fourth Proportional to 420,554.79, 630,841.05 and 150,700.52

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Solution

The fourth proportional to 420,554.79, 630,841.05 and 150,700.52 is: 226,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,554.79 : 630,841.05 = 150,700.52 : x
  2. Step 2: Convert to fraction form
    420,554.79/630,841.05 = 150,700.52/x
  3. Step 3: Cross multiply
    420,554.79x = 630,841.05 × 150,700.52
  4. Step 4: Simplify right side
    420,554.79x = 95,068,071,118.14
  5. Step 5: Solve for x
    x = 95,068,071,118.14/420,554.79
  6. Step 6: Final answer
    x = 226,053.95

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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.