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Finding the Fourth Proportional to 616,328.40, 924,031.80 and 261,051.60

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Solution

The fourth proportional to 616,328.40, 924,031.80 and 261,051.60 is: 391,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,328.40 : 924,031.80 = 261,051.60 : x
  2. Step 2: Convert to fraction form
    616,328.40/924,031.80 = 261,051.60/x
  3. Step 3: Cross multiply
    616,328.40x = 924,031.80 × 261,051.60
  4. Step 4: Simplify right side
    616,328.40x = 241,219,979,840.88
  5. Step 5: Solve for x
    x = 241,219,979,840.88/616,328.40
  6. Step 6: Final answer
    x = 391,382.22

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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.