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Finding the Fourth Proportional to 290,330.88, 435,392.64 and 100,742.40

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Solution

The fourth proportional to 290,330.88, 435,392.64 and 100,742.40 is: 151,077.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,330.88 : 435,392.64 = 100,742.40 : x
  2. Step 2: Convert to fraction form
    290,330.88/435,392.64 = 100,742.40/x
  3. Step 3: Cross multiply
    290,330.88x = 435,392.64 × 100,742.40
  4. Step 4: Simplify right side
    290,330.88x = 43,862,499,495.94
  5. Step 5: Solve for x
    x = 43,862,499,495.94/290,330.88
  6. Step 6: Final answer
    x = 151,077.62

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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.