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Finding the Fourth Proportional to 539,348.40, 808,828.20 and 273,020.40

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Solution

The fourth proportional to 539,348.40, 808,828.20 and 273,020.40 is: 409,432.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,348.40 : 808,828.20 = 273,020.40 : x
  2. Step 2: Convert to fraction form
    539,348.40/808,828.20 = 273,020.40/x
  3. Step 3: Cross multiply
    539,348.40x = 808,828.20 × 273,020.40
  4. Step 4: Simplify right side
    539,348.40x = 220,826,598,695.28
  5. Step 5: Solve for x
    x = 220,826,598,695.28/539,348.40
  6. Step 6: Final answer
    x = 409,432.19

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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.