Home / 278,445.11-417,866.81-118,633.04

Finding the Fourth Proportional to 278,445.11, 417,866.81 and 118,633.04

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Solution

The fourth proportional to 278,445.11, 417,866.81 and 118,633.04 is: 178,034.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,445.11 : 417,866.81 = 118,633.04 : x
  2. Step 2: Convert to fraction form
    278,445.11/417,866.81 = 118,633.04/x
  3. Step 3: Cross multiply
    278,445.11x = 417,866.81 × 118,633.04
  4. Step 4: Simplify right side
    278,445.11x = 49,572,809,985.40
  5. Step 5: Solve for x
    x = 49,572,809,985.40/278,445.11
  6. Step 6: Final answer
    x = 178,034.41

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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.