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Finding the Fourth Proportional to 386,374.08, 579,511.84 and 149,554.72

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Solution

The fourth proportional to 386,374.08, 579,511.84 and 149,554.72 is: 224,313.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,374.08 : 579,511.84 = 149,554.72 : x
  2. Step 2: Convert to fraction form
    386,374.08/579,511.84 = 149,554.72/x
  3. Step 3: Cross multiply
    386,374.08x = 579,511.84 × 149,554.72
  4. Step 4: Simplify right side
    386,374.08x = 86,668,730,967.88
  5. Step 5: Solve for x
    x = 86,668,730,967.88/386,374.08
  6. Step 6: Final answer
    x = 224,313.01

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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.