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Finding the Fourth Proportional to 293,486.20, 439,710.90 and 260,308.60

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Solution

The fourth proportional to 293,486.20, 439,710.90 and 260,308.60 is: 390,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,486.20 : 439,710.90 = 260,308.60 : x
  2. Step 2: Convert to fraction form
    293,486.20/439,710.90 = 260,308.60/x
  3. Step 3: Cross multiply
    293,486.20x = 439,710.90 × 260,308.60
  4. Step 4: Simplify right side
    293,486.20x = 114,460,528,783.74
  5. Step 5: Solve for x
    x = 114,460,528,783.74/293,486.20
  6. Step 6: Final answer
    x = 390,003.10

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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.