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Finding the Fourth Proportional to 278,295.76, 417,504.12 and 91,300.24

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Solution

The fourth proportional to 278,295.76, 417,504.12 and 91,300.24 is: 136,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,295.76 : 417,504.12 = 91,300.24 : x
  2. Step 2: Convert to fraction form
    278,295.76/417,504.12 = 91,300.24/x
  3. Step 3: Cross multiply
    278,295.76x = 417,504.12 × 91,300.24
  4. Step 4: Simplify right side
    278,295.76x = 38,118,226,356.99
  5. Step 5: Solve for x
    x = 38,118,226,356.99/278,295.76
  6. Step 6: Final answer
    x = 136,970.20

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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.