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Finding the Fourth Proportional to 286,772.40, 429,640.20 and 233,895.60

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Solution

The fourth proportional to 286,772.40, 429,640.20 and 233,895.60 is: 350,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,772.40 : 429,640.20 = 233,895.60 : x
  2. Step 2: Convert to fraction form
    286,772.40/429,640.20 = 233,895.60/x
  3. Step 3: Cross multiply
    286,772.40x = 429,640.20 × 233,895.60
  4. Step 4: Simplify right side
    286,772.40x = 100,490,952,363.12
  5. Step 5: Solve for x
    x = 100,490,952,363.12/286,772.40
  6. Step 6: Final answer
    x = 350,420.59

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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.