Home / 282,619.16-390,013.26-155,294.36

Finding the Fourth Proportional to 282,619.16, 390,013.26 and 155,294.36

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Solution

The fourth proportional to 282,619.16, 390,013.26 and 155,294.36 is: 214,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,619.16 : 390,013.26 = 155,294.36 : x
  2. Step 2: Convert to fraction form
    282,619.16/390,013.26 = 155,294.36/x
  3. Step 3: Cross multiply
    282,619.16x = 390,013.26 × 155,294.36
  4. Step 4: Simplify right side
    282,619.16x = 60,566,859,603.21
  5. Step 5: Solve for x
    x = 60,566,859,603.21/282,619.16
  6. Step 6: Final answer
    x = 214,305.57

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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.