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Finding the Fourth Proportional to 286,534.40, 429,801.60 and 89,542.40

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Solution

The fourth proportional to 286,534.40, 429,801.60 and 89,542.40 is: 134,313.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,534.40 : 429,801.60 = 89,542.40 : x
  2. Step 2: Convert to fraction form
    286,534.40/429,801.60 = 89,542.40/x
  3. Step 3: Cross multiply
    286,534.40x = 429,801.60 × 89,542.40
  4. Step 4: Simplify right side
    286,534.40x = 38,485,466,787.84
  5. Step 5: Solve for x
    x = 38,485,466,787.84/286,534.40
  6. Step 6: Final answer
    x = 134,313.60

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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.