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Finding the Fourth Proportional to 290,010.40, 434,196.40 and 281,818.40

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Solution

The fourth proportional to 290,010.40, 434,196.40 and 281,818.40 is: 421,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,010.40 : 434,196.40 = 281,818.40 : x
  2. Step 2: Convert to fraction form
    290,010.40/434,196.40 = 281,818.40/x
  3. Step 3: Cross multiply
    290,010.40x = 434,196.40 × 281,818.40
  4. Step 4: Simplify right side
    290,010.40x = 122,364,534,733.76
  5. Step 5: Solve for x
    x = 122,364,534,733.76/290,010.40
  6. Step 6: Final answer
    x = 421,931.54

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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.