Home / 287,940-397,357.56-160,623.72

Finding the Fourth Proportional to 287,940, 397,357.56 and 160,623.72

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Solution

The fourth proportional to 287,940, 397,357.56 and 160,623.72 is: 221,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,940 : 397,357.56 = 160,623.72 : x
  2. Step 2: Convert to fraction form
    287,940/397,357.56 = 160,623.72/x
  3. Step 3: Cross multiply
    287,940x = 397,357.56 × 160,623.72
  4. Step 4: Simplify right side
    287,940x = 63,825,049,457.32
  5. Step 5: Solve for x
    x = 63,825,049,457.32/287,940
  6. Step 6: Final answer
    x = 221,660.93

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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.