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Finding the Fourth Proportional to 639,273.90, 958,246.65 and 260,031.90

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Solution

The fourth proportional to 639,273.90, 958,246.65 and 260,031.90 is: 389,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,273.90 : 958,246.65 = 260,031.90 : x
  2. Step 2: Convert to fraction form
    639,273.90/958,246.65 = 260,031.90/x
  3. Step 3: Cross multiply
    639,273.90x = 958,246.65 × 260,031.90
  4. Step 4: Simplify right side
    639,273.90x = 249,174,697,068.14
  5. Step 5: Solve for x
    x = 249,174,697,068.14/639,273.90
  6. Step 6: Final answer
    x = 389,777.68

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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.