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Finding the Fourth Proportional to 290,492.80, 435,998.40 and 251,094.40

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Solution

The fourth proportional to 290,492.80, 435,998.40 and 251,094.40 is: 376,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,492.80 : 435,998.40 = 251,094.40 : x
  2. Step 2: Convert to fraction form
    290,492.80/435,998.40 = 251,094.40/x
  3. Step 3: Cross multiply
    290,492.80x = 435,998.40 × 251,094.40
  4. Step 4: Simplify right side
    290,492.80x = 109,476,756,648.96
  5. Step 5: Solve for x
    x = 109,476,756,648.96/290,492.80
  6. Step 6: Final answer
    x = 376,865.65

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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.