Home / 282,708.32-390,139.92-155,386.88

Finding the Fourth Proportional to 282,708.32, 390,139.92 and 155,386.88

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Solution

The fourth proportional to 282,708.32, 390,139.92 and 155,386.88 is: 214,435.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,708.32 : 390,139.92 = 155,386.88 : x
  2. Step 2: Convert to fraction form
    282,708.32/390,139.92 = 155,386.88/x
  3. Step 3: Cross multiply
    282,708.32x = 390,139.92 × 155,386.88
  4. Step 4: Simplify right side
    282,708.32x = 60,622,624,932.25
  5. Step 5: Solve for x
    x = 60,622,624,932.25/282,708.32
  6. Step 6: Final answer
    x = 214,435.23

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1.5x scale

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.