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Finding the Fourth Proportional to 515,262.20, 711,062.13 and 314,058.20

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Solution

The fourth proportional to 515,262.20, 711,062.13 and 314,058.20 is: 433,400.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,262.20 : 711,062.13 = 314,058.20 : x
  2. Step 2: Convert to fraction form
    515,262.20/711,062.13 = 314,058.20/x
  3. Step 3: Cross multiply
    515,262.20x = 711,062.13 × 314,058.20
  4. Step 4: Simplify right side
    515,262.20x = 223,314,889,080.66
  5. Step 5: Solve for x
    x = 223,314,889,080.66/515,262.20
  6. Step 6: Final answer
    x = 433,400.49

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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.