Home / 282,617.09-390,007.20-155,289.95

Finding the Fourth Proportional to 282,617.09, 390,007.20 and 155,289.95

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Solution

The fourth proportional to 282,617.09, 390,007.20 and 155,289.95 is: 214,297.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,617.09 : 390,007.20 = 155,289.95 : x
  2. Step 2: Convert to fraction form
    282,617.09/390,007.20 = 155,289.95/x
  3. Step 3: Cross multiply
    282,617.09x = 390,007.20 × 155,289.95
  4. Step 4: Simplify right side
    282,617.09x = 60,564,196,637.60
  5. Step 5: Solve for x
    x = 60,564,196,637.60/282,617.09
  6. Step 6: Final answer
    x = 214,297.72

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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.