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Finding the Fourth Proportional to 418,018.95, 577,042.31 and 282,236.63

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Solution

The fourth proportional to 418,018.95, 577,042.31 and 282,236.63 is: 389,605.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,018.95 : 577,042.31 = 282,236.63 : x
  2. Step 2: Convert to fraction form
    418,018.95/577,042.31 = 282,236.63/x
  3. Step 3: Cross multiply
    418,018.95x = 577,042.31 × 282,236.63
  4. Step 4: Simplify right side
    418,018.95x = 162,862,475,867.72
  5. Step 5: Solve for x
    x = 162,862,475,867.72/418,018.95
  6. Step 6: Final answer
    x = 389,605.48

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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.