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Finding the Fourth Proportional to 265,528.80, 399,070.80 and 231,314.40

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Solution

The fourth proportional to 265,528.80, 399,070.80 and 231,314.40 is: 347,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,528.80 : 399,070.80 = 231,314.40 : x
  2. Step 2: Convert to fraction form
    265,528.80/399,070.80 = 231,314.40/x
  3. Step 3: Cross multiply
    265,528.80x = 399,070.80 × 231,314.40
  4. Step 4: Simplify right side
    265,528.80x = 92,310,822,659.52
  5. Step 5: Solve for x
    x = 92,310,822,659.52/265,528.80
  6. Step 6: Final answer
    x = 347,649.00

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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.