Home / 260,177.40-390,292.07-70,640.81

Finding the Fourth Proportional to 260,177.40, 390,292.07 and 70,640.81

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Solution

The fourth proportional to 260,177.40, 390,292.07 and 70,640.81 is: 105,968.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,177.40 : 390,292.07 = 70,640.81 : x
  2. Step 2: Convert to fraction form
    260,177.40/390,292.07 = 70,640.81/x
  3. Step 3: Cross multiply
    260,177.40x = 390,292.07 × 70,640.81
  4. Step 4: Simplify right side
    260,177.40x = 27,570,547,608.17
  5. Step 5: Solve for x
    x = 27,570,547,608.17/260,177.40
  6. Step 6: Final answer
    x = 105,968.27

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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.