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Finding the Fourth Proportional to 492,465.60, 738,722.70 and 256,269.60

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Solution

The fourth proportional to 492,465.60, 738,722.70 and 256,269.60 is: 384,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,465.60 : 738,722.70 = 256,269.60 : x
  2. Step 2: Convert to fraction form
    492,465.60/738,722.70 = 256,269.60/x
  3. Step 3: Cross multiply
    492,465.60x = 738,722.70 × 256,269.60
  4. Step 4: Simplify right side
    492,465.60x = 189,312,170,839.92
  5. Step 5: Solve for x
    x = 189,312,170,839.92/492,465.60
  6. Step 6: Final answer
    x = 384,417.05

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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.