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Finding the Fourth Proportional to 290,340.96, 435,341.88 and 112,640.32

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Solution

The fourth proportional to 290,340.96, 435,341.88 and 112,640.32 is: 168,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,340.96 : 435,341.88 = 112,640.32 : x
  2. Step 2: Convert to fraction form
    290,340.96/435,341.88 = 112,640.32/x
  3. Step 3: Cross multiply
    290,340.96x = 435,341.88 × 112,640.32
  4. Step 4: Simplify right side
    290,340.96x = 49,037,048,672.60
  5. Step 5: Solve for x
    x = 49,037,048,672.60/290,340.96
  6. Step 6: Final answer
    x = 168,894.70

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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.