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Finding the Fourth Proportional to 273,430.60, 410,145.90 and 256,809.40

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Solution

The fourth proportional to 273,430.60, 410,145.90 and 256,809.40 is: 385,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,430.60 : 410,145.90 = 256,809.40 : x
  2. Step 2: Convert to fraction form
    273,430.60/410,145.90 = 256,809.40/x
  3. Step 3: Cross multiply
    273,430.60x = 410,145.90 × 256,809.40
  4. Step 4: Simplify right side
    273,430.60x = 105,329,322,491.46
  5. Step 5: Solve for x
    x = 105,329,322,491.46/273,430.60
  6. Step 6: Final answer
    x = 385,214.10

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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.