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Finding the Fourth Proportional to 293,865.60, 440,409.60 and 260,428.80

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Solution

The fourth proportional to 293,865.60, 440,409.60 and 260,428.80 is: 390,298.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,865.60 : 440,409.60 = 260,428.80 : x
  2. Step 2: Convert to fraction form
    293,865.60/440,409.60 = 260,428.80/x
  3. Step 3: Cross multiply
    293,865.60x = 440,409.60 × 260,428.80
  4. Step 4: Simplify right side
    293,865.60x = 114,695,343,636.48
  5. Step 5: Solve for x
    x = 114,695,343,636.48/293,865.60
  6. Step 6: Final answer
    x = 390,298.64

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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.