Home / 287,960.80-397,364-158,904.42

Finding the Fourth Proportional to 287,960.80, 397,364 and 158,904.42

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Solution

The fourth proportional to 287,960.80, 397,364 and 158,904.42 is: 219,276.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,960.80 : 397,364 = 158,904.42 : x
  2. Step 2: Convert to fraction form
    287,960.80/397,364 = 158,904.42/x
  3. Step 3: Cross multiply
    287,960.80x = 397,364 × 158,904.42
  4. Step 4: Simplify right side
    287,960.80x = 63,142,895,948.88
  5. Step 5: Solve for x
    x = 63,142,895,948.88/287,960.80
  6. Step 6: Final answer
    x = 219,276.01

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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.