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Finding the Fourth Proportional to 290,333.64, 435,500.25 and 90,671.13

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Solution

The fourth proportional to 290,333.64, 435,500.25 and 90,671.13 is: 136,006.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,333.64 : 435,500.25 = 90,671.13 : x
  2. Step 2: Convert to fraction form
    290,333.64/435,500.25 = 90,671.13/x
  3. Step 3: Cross multiply
    290,333.64x = 435,500.25 × 90,671.13
  4. Step 4: Simplify right side
    290,333.64x = 39,487,299,782.78
  5. Step 5: Solve for x
    x = 39,487,299,782.78/290,333.64
  6. Step 6: Final answer
    x = 136,006.63

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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.