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Finding the Fourth Proportional to 261,399.60, 392,099.40 and 202,277.70

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Solution

The fourth proportional to 261,399.60, 392,099.40 and 202,277.70 is: 303,416.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,399.60 : 392,099.40 = 202,277.70 : x
  2. Step 2: Convert to fraction form
    261,399.60/392,099.40 = 202,277.70/x
  3. Step 3: Cross multiply
    261,399.60x = 392,099.40 × 202,277.70
  4. Step 4: Simplify right side
    261,399.60x = 79,312,964,803.38
  5. Step 5: Solve for x
    x = 79,312,964,803.38/261,399.60
  6. Step 6: Final answer
    x = 303,416.55

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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.