Home / 390,923.40-539,532.18-247,696.77

Finding the Fourth Proportional to 390,923.40, 539,532.18 and 247,696.77

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Solution

The fourth proportional to 390,923.40, 539,532.18 and 247,696.77 is: 341,858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,923.40 : 539,532.18 = 247,696.77 : x
  2. Step 2: Convert to fraction form
    390,923.40/539,532.18 = 247,696.77/x
  3. Step 3: Cross multiply
    390,923.40x = 539,532.18 × 247,696.77
  4. Step 4: Simplify right side
    390,923.40x = 133,640,378,297.06
  5. Step 5: Solve for x
    x = 133,640,378,297.06/390,923.40
  6. Step 6: Final answer
    x = 341,858.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.