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Finding the Fourth Proportional to 331,511.40, 497,484.90 and 181,856.52

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Solution

The fourth proportional to 331,511.40, 497,484.90 and 181,856.52 is: 272,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,511.40 : 497,484.90 = 181,856.52 : x
  2. Step 2: Convert to fraction form
    331,511.40/497,484.90 = 181,856.52/x
  3. Step 3: Cross multiply
    331,511.40x = 497,484.90 × 181,856.52
  4. Step 4: Simplify right side
    331,511.40x = 90,470,872,666.55
  5. Step 5: Solve for x
    x = 90,470,872,666.55/331,511.40
  6. Step 6: Final answer
    x = 272,904.26

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1.5x scale

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.