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Finding the Fourth Proportional to 261,405.60, 392,108.40 and 246,890.40

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Solution

The fourth proportional to 261,405.60, 392,108.40 and 246,890.40 is: 370,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,405.60 : 392,108.40 = 246,890.40 : x
  2. Step 2: Convert to fraction form
    261,405.60/392,108.40 = 246,890.40/x
  3. Step 3: Cross multiply
    261,405.60x = 392,108.40 × 246,890.40
  4. Step 4: Simplify right side
    261,405.60x = 96,807,799,719.36
  5. Step 5: Solve for x
    x = 96,807,799,719.36/261,405.60
  6. Step 6: Final answer
    x = 370,335.60

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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.