Home / 282,730.49-390,163.60-155,403.35

Finding the Fourth Proportional to 282,730.49, 390,163.60 and 155,403.35

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Solution

The fourth proportional to 282,730.49, 390,163.60 and 155,403.35 is: 214,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,730.49 : 390,163.60 = 155,403.35 : x
  2. Step 2: Convert to fraction form
    282,730.49/390,163.60 = 155,403.35/x
  3. Step 3: Cross multiply
    282,730.49x = 390,163.60 × 155,403.35
  4. Step 4: Simplify right side
    282,730.49x = 60,632,730,488.06
  5. Step 5: Solve for x
    x = 60,632,730,488.06/282,730.49
  6. Step 6: Final answer
    x = 214,454.16

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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.