Home / 278,303.20-417,354.12-118,389.76

Finding the Fourth Proportional to 278,303.20, 417,354.12 and 118,389.76

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Solution

The fourth proportional to 278,303.20, 417,354.12 and 118,389.76 is: 177,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,303.20 : 417,354.12 = 118,389.76 : x
  2. Step 2: Convert to fraction form
    278,303.20/417,354.12 = 118,389.76/x
  3. Step 3: Cross multiply
    278,303.20x = 417,354.12 × 118,389.76
  4. Step 4: Simplify right side
    278,303.20x = 49,410,454,101.81
  5. Step 5: Solve for x
    x = 49,410,454,101.81/278,303.20
  6. Step 6: Final answer
    x = 177,541.81

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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.