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Finding the Fourth Proportional to 278,752.40, 417,437.40 and 223,456.40

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Solution

The fourth proportional to 278,752.40, 417,437.40 and 223,456.40 is: 334,630.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,752.40 : 417,437.40 = 223,456.40 : x
  2. Step 2: Convert to fraction form
    278,752.40/417,437.40 = 223,456.40/x
  3. Step 3: Cross multiply
    278,752.40x = 417,437.40 × 223,456.40
  4. Step 4: Simplify right side
    278,752.40x = 93,279,058,629.36
  5. Step 5: Solve for x
    x = 93,279,058,629.36/278,752.40
  6. Step 6: Final answer
    x = 334,630.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.