Home / 280,890.32-387,628.61-153,565.88

Finding the Fourth Proportional to 280,890.32, 387,628.61 and 153,565.88

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Solution

The fourth proportional to 280,890.32, 387,628.61 and 153,565.88 is: 211,920.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,890.32 : 387,628.61 = 153,565.88 : x
  2. Step 2: Convert to fraction form
    280,890.32/387,628.61 = 153,565.88/x
  3. Step 3: Cross multiply
    280,890.32x = 387,628.61 × 153,565.88
  4. Step 4: Simplify right side
    280,890.32x = 59,526,525,901.85
  5. Step 5: Solve for x
    x = 59,526,525,901.85/280,890.32
  6. Step 6: Final answer
    x = 211,920.89

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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.