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Finding the Fourth Proportional to 286,603.60, 429,905.40 and 259,047.40

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Solution

The fourth proportional to 286,603.60, 429,905.40 and 259,047.40 is: 388,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,603.60 : 429,905.40 = 259,047.40 : x
  2. Step 2: Convert to fraction form
    286,603.60/429,905.40 = 259,047.40/x
  3. Step 3: Cross multiply
    286,603.60x = 429,905.40 × 259,047.40
  4. Step 4: Simplify right side
    286,603.60x = 111,365,876,115.96
  5. Step 5: Solve for x
    x = 111,365,876,115.96/286,603.60
  6. Step 6: Final answer
    x = 388,571.10

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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.