Home / 278,681.13-417,914.73-118,655.60

Finding the Fourth Proportional to 278,681.13, 417,914.73 and 118,655.60

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Solution

The fourth proportional to 278,681.13, 417,914.73 and 118,655.60 is: 177,937.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,681.13 : 417,914.73 = 118,655.60 : x
  2. Step 2: Convert to fraction form
    278,681.13/417,914.73 = 118,655.60/x
  3. Step 3: Cross multiply
    278,681.13x = 417,914.73 × 118,655.60
  4. Step 4: Simplify right side
    278,681.13x = 49,587,924,081.77
  5. Step 5: Solve for x
    x = 49,587,924,081.77/278,681.13
  6. Step 6: Final answer
    x = 177,937.86

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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.