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Finding the Fourth Proportional to 261,344.40, 392,016.60 and 243,629.70

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Solution

The fourth proportional to 261,344.40, 392,016.60 and 243,629.70 is: 365,444.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,344.40 : 392,016.60 = 243,629.70 : x
  2. Step 2: Convert to fraction form
    261,344.40/392,016.60 = 243,629.70/x
  3. Step 3: Cross multiply
    261,344.40x = 392,016.60 × 243,629.70
  4. Step 4: Simplify right side
    261,344.40x = 95,506,886,653.02
  5. Step 5: Solve for x
    x = 95,506,886,653.02/261,344.40
  6. Step 6: Final answer
    x = 365,444.55

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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.