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Finding the Fourth Proportional to 623,312.90, 936,006.15 and 343,031.30

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Solution

The fourth proportional to 623,312.90, 936,006.15 and 343,031.30 is: 515,117.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,312.90 : 936,006.15 = 343,031.30 : x
  2. Step 2: Convert to fraction form
    623,312.90/936,006.15 = 343,031.30/x
  3. Step 3: Cross multiply
    623,312.90x = 936,006.15 × 343,031.30
  4. Step 4: Simplify right side
    623,312.90x = 321,079,406,442.50
  5. Step 5: Solve for x
    x = 321,079,406,442.50/623,312.90
  6. Step 6: Final answer
    x = 515,117.54

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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.