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Finding the Fourth Proportional to 515,021.16, 710,737.71 and 285,588.12

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Solution

The fourth proportional to 515,021.16, 710,737.71 and 285,588.12 is: 394,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,021.16 : 710,737.71 = 285,588.12 : x
  2. Step 2: Convert to fraction form
    515,021.16/710,737.71 = 285,588.12/x
  3. Step 3: Cross multiply
    515,021.16x = 710,737.71 × 285,588.12
  4. Step 4: Simplify right side
    515,021.16x = 202,978,246,412.01
  5. Step 5: Solve for x
    x = 202,978,246,412.01/515,021.16
  6. Step 6: Final answer
    x = 394,116.32

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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.