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Finding the Fourth Proportional to 286,270.80, 428,531.40 and 286,270.80

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Solution

The fourth proportional to 286,270.80, 428,531.40 and 286,270.80 is: 428,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,270.80 : 428,531.40 = 286,270.80 : x
  2. Step 2: Convert to fraction form
    286,270.80/428,531.40 = 286,270.80/x
  3. Step 3: Cross multiply
    286,270.80x = 428,531.40 × 286,270.80
  4. Step 4: Simplify right side
    286,270.80x = 122,676,026,703.12
  5. Step 5: Solve for x
    x = 122,676,026,703.12/286,270.80
  6. Step 6: Final answer
    x = 428,531.40

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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.