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Finding the Fourth Proportional to 508,238.15, 701,404.21 and 290,478.89

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Solution

The fourth proportional to 508,238.15, 701,404.21 and 290,478.89 is: 400,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,238.15 : 701,404.21 = 290,478.89 : x
  2. Step 2: Convert to fraction form
    508,238.15/701,404.21 = 290,478.89/x
  3. Step 3: Cross multiply
    508,238.15x = 701,404.21 × 290,478.89
  4. Step 4: Simplify right side
    508,238.15x = 203,743,118,478.74
  5. Step 5: Solve for x
    x = 203,743,118,478.74/508,238.15
  6. Step 6: Final answer
    x = 400,881.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.