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Finding the Fourth Proportional to 293,487.20, 439,712.40 and 260,309.60

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Solution

The fourth proportional to 293,487.20, 439,712.40 and 260,309.60 is: 390,004.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,487.20 : 439,712.40 = 260,309.60 : x
  2. Step 2: Convert to fraction form
    293,487.20/439,712.40 = 260,309.60/x
  3. Step 3: Cross multiply
    293,487.20x = 439,712.40 × 260,309.60
  4. Step 4: Simplify right side
    293,487.20x = 114,461,358,959.04
  5. Step 5: Solve for x
    x = 114,461,358,959.04/293,487.20
  6. Step 6: Final answer
    x = 390,004.60

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1.5x scale

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.