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Finding the Fourth Proportional to 354,416.80, 531,625.20 and 288,061.60

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Solution

The fourth proportional to 354,416.80, 531,625.20 and 288,061.60 is: 432,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,416.80 : 531,625.20 = 288,061.60 : x
  2. Step 2: Convert to fraction form
    354,416.80/531,625.20 = 288,061.60/x
  3. Step 3: Cross multiply
    354,416.80x = 531,625.20 × 288,061.60
  4. Step 4: Simplify right side
    354,416.80x = 153,140,805,712.32
  5. Step 5: Solve for x
    x = 153,140,805,712.32/354,416.80
  6. Step 6: Final answer
    x = 432,092.40

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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.