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Finding the Fourth Proportional to 261,401.60, 392,102.40 and 202,279.70

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Solution

The fourth proportional to 261,401.60, 392,102.40 and 202,279.70 is: 303,419.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,401.60 : 392,102.40 = 202,279.70 : x
  2. Step 2: Convert to fraction form
    261,401.60/392,102.40 = 202,279.70/x
  3. Step 3: Cross multiply
    261,401.60x = 392,102.40 × 202,279.70
  4. Step 4: Simplify right side
    261,401.60x = 79,314,355,841.28
  5. Step 5: Solve for x
    x = 79,314,355,841.28/261,401.60
  6. Step 6: Final answer
    x = 303,419.55

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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.