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Finding the Fourth Proportional to 406,031.80, 608,529.30 and 312,071.80

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Solution

The fourth proportional to 406,031.80, 608,529.30 and 312,071.80 is: 467,709.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,031.80 : 608,529.30 = 312,071.80 : x
  2. Step 2: Convert to fraction form
    406,031.80/608,529.30 = 312,071.80/x
  3. Step 3: Cross multiply
    406,031.80x = 608,529.30 × 312,071.80
  4. Step 4: Simplify right side
    406,031.80x = 189,904,834,003.74
  5. Step 5: Solve for x
    x = 189,904,834,003.74/406,031.80
  6. Step 6: Final answer
    x = 467,709.26

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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.