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Finding the Fourth Proportional to 515,215.77, 710,962.16 and 285,751.41

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Solution

The fourth proportional to 515,215.77, 710,962.16 and 285,751.41 is: 394,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,215.77 : 710,962.16 = 285,751.41 : x
  2. Step 2: Convert to fraction form
    515,215.77/710,962.16 = 285,751.41/x
  3. Step 3: Cross multiply
    515,215.77x = 710,962.16 × 285,751.41
  4. Step 4: Simplify right side
    515,215.77x = 203,158,438,247.89
  5. Step 5: Solve for x
    x = 203,158,438,247.89/515,215.77
  6. Step 6: Final answer
    x = 394,317.20

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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.