Home / 280,289.52-386,807.70-152,973.36

Finding the Fourth Proportional to 280,289.52, 386,807.70 and 152,973.36

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Solution

The fourth proportional to 280,289.52, 386,807.70 and 152,973.36 is: 211,107.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,289.52 : 386,807.70 = 152,973.36 : x
  2. Step 2: Convert to fraction form
    280,289.52/386,807.70 = 152,973.36/x
  3. Step 3: Cross multiply
    280,289.52x = 386,807.70 × 152,973.36
  4. Step 4: Simplify right side
    280,289.52x = 59,171,273,542.87
  5. Step 5: Solve for x
    x = 59,171,273,542.87/280,289.52
  6. Step 6: Final answer
    x = 211,107.69

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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.