Home / 278,844.12-417,923.55-128,881.53

Finding the Fourth Proportional to 278,844.12, 417,923.55 and 128,881.53

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Solution

The fourth proportional to 278,844.12, 417,923.55 and 128,881.53 is: 193,163.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,844.12 : 417,923.55 = 128,881.53 : x
  2. Step 2: Convert to fraction form
    278,844.12/417,923.55 = 128,881.53/x
  3. Step 3: Cross multiply
    278,844.12x = 417,923.55 × 128,881.53
  4. Step 4: Simplify right side
    278,844.12x = 53,862,626,547.03
  5. Step 5: Solve for x
    x = 53,862,626,547.03/278,844.12
  6. Step 6: Final answer
    x = 193,163.93

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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.